What are people putting on their top-tube accessory mounts?

Thank you for asking. 

I cut all the tubes from a broken aluminum bottle cage holder and put just that remaining bracket on there. The idea was that I could strap a tube or one of those little packs to it. 

I’ve done neither, ever, and just ride around with an extra aluminum piece on my bike. DH tires kinda never flat and I’ll wear a FANNY_PACK and put shit in my pockets. 

This is like me with Internal storage, Like i dont need that feature, if I ride Anywhere that requires those items that you'd usally store in there, i take my hip pack anyway - I'd rather not have it, Lighten the bike instead(Ie leave the weight off if not needed)

side point: im not someone who bothers with weight much, Bikes around that 16-17kg mark are so good, light wheels, tyres and comfy position make a bigger difference than overal bike weight - been testing a Fuel EX gen 7 alloy recently, it weighs 16.7kg ish with solid wheels(rf arc30/turbine and EXO+ ) and its been a fantastic bike, Durable, stiff and can make it from 145 to over 160mm - its very composed but also returns a fun Bike.
Might have to Let this bike be my new bench mark/test bike for parts.

"You could put your Weed in there Man." Referencing late 80's or early 90's era Saturday Night Live. I think it was an Eddie Murphy skit. Perhaps Risse Racing, who used to make fork leg bongs and stealth Sharpy looking pipes and chillums could make a bolt on stash/pipe/lighter kit?

The only thing I used that attachment point for was a canister of bear spray, but now that I live in a place where all the bears are in town instead of on the trails, I don't even use it for that. Tools/tube/food/jacket go in the pack with the water. My gravel bike has a mount under the BB that has a little canister with a tube/CO2/levers, but I still use the pack when riding that bike too, so...

Got a tube there on one bike and it’s just empty on another. No desire for a snack hatch… but I ride in shorts with really really good pockets 😉

I’ve got my Wolftooth 40cc pump mounted with their inline mount to mine on my Top Fuel. It’s nice and out of the way and always on my bike, whether or not I have a hip pack. 

Thats where I store my tube, a few zip ties and pedros tire lever.  I have an EDC tool, but don't trust the tire lever on it, too flimsy for DH tires.  The EDC tool, EDC pump and the top tube thingy have let me move all my tools out of my butt bag and onto my bike.  I'd much rather have a slightly heavier bike then weight on my hips.  But in reality I now just jam more food into my bag.  

OneUp pump with EDC tool on an inline mount. The pump still gets used multiple times a year without fail, and is mandatory piece of kit to fix some situations. The downtube of my last frame made it impossible to mount the pump holder under the bottle cage. It's also nicely out of the way when it's inline with the frame.

Or you can have a mount to strap on a tube, tool roll, etc. Be creative and you can avoid carrying a pack.

I keep a oneup 70cc pump on my under top tube mount.  I have a little amazon tire bacon strip plug kit in it that has some electrical tape wrapped around it to make it fit snug (but not too snug).  I also shove a little section of chain, mini zip ties, and a valve core in there.  I use an oneup edc lite in my steer tube for multi-tool usage.  

I have a little tube holder that has a tpu tube, a small square of ripstop material to use as a tire boot, tire levers, more bacon strips and a valve stem that I can strap to the bike and/or carry in my bib pocket.  I use leap components saddle rail axs battery holders on my bikes that do not have in frame storage, in order to carry a spare axs battery.  

bitd someone was making end caps that would allow you to use your handlebar as a pipe. 

also this:

https://wheelsmfg.com/blog/introducing-the-wheels-manufacturing-cockpit…

I don't have a bottle cage mount there but I use an Occam Apex strap to hold a tube and tire levers in that sort of "near the headtube" space on my bike. I used to also have my multitool there but I've moved it to my hydration pack since then.

You could get something like this: https://www.fidlock.com/consumer/en/twist-toolbox-bike-base/09635-p00002-blk

or this: https://www.topeak.com/global/en/product/1709-ESCAPE-POD+

Both containers that can...contain things and are attached via accessory mounts.

I've got a small tool/accessory roll that mounts to the accessory mount from Alpine Threadworks in Calgary. Looks like they're out of stock right now, but as a guy who doesn't like riding with any kind of pack or hip bag, it's nice to have a few essentials just in case. 

(3) Alpine Threadworks Rockies Rap (bike tool wrap / holder) - YouTube

This has been awesome. Tube strapped behind it and I'm pretty much set // not missing my in frame storage on the spire. 

I was looking at that, but $160 is... a lot. 

Nothing. I literally forgot that my bike has an accessory mount. Maybe I'll figure out a use for it, but for me, having anything secured right there is still open to the elements and probably better protected in my pack. 

Have had a couple heavy beers and went from “yeah I’ll buy that why not” to “oh shit no goddamn way!” in one comment. Thank you

I have a spare tube in one of these under the downtube of my steel HT. The tube does not mind that it's exposed to elements, and I like this strap better than those that wrap around the frame. Buy the Apollo Tube Strap | MTB Gear | High Above

I use the Wolftooth version of that mount. It carries a tube, CO2, plugs, and a tire lever. I've started using a pump from OneUp so the CO2 might get phased out.

Most people use the top-tube accessory mounts for small storage cases—things like a tube, CO₂, multitool, or snacks. Some mount a slim top-tube bag for longer rides, while others opt for a minimalist setup with just a GPS tracker. I’ve even seen a few riders get creative and attach a small cup coaster for holding their coffee cup during slow rolls or café stops. It really depends on your setup and the amount of quick-access storage you require.

I only remember Rob Schneider doing it on SNL.

I have a DH bike with the top tube mount, and I wanted just a small multi tool for the occasional lever adjustment etc, but not the whole pack of pump, tubes etc.

So I’ve designed this little 3d printed part, and it came out great, it’s rock solid and doesn’t rattle. Uses the original OneUp strap.

If anyone is interested I can upload it somewhere

That is pretty sweet, can you upload it to thingverse?

Also the CB TT17 tool posted above is currently $104 with 20% BF discount. Still quite pricey, but not $160 pricey.

Thanks, I’m out for the weekend but gonna upload it on Monday 

I really like the Crank brothers Tube Stash mount.  I use it with a specalized mullet tube.  Really like getting the tube out of the hip pack.

For me it’s the Crankbrothers S.O.S. TS18 Multi-tool Kit.

Allows tools / tube / canister / leaver / plugs. That’s in my e-bike without a crank axle.i do have a spare canister and AirTag in the battery compartment.

On my  remedy (dual mounts) I have the all in one tool in the spindle. 
Then a little piggy (has good edges) for the tube.And a wolf tooth bracket with a pouch for leaver and canister.

Do you play hot cross buns when you get to the top? 

Have my first bike with downtime storage. Prior to this I’ve had the same edc tool for 6 years and now on its fourth bike. I never had an issue with it rusting in the steerer tube. In the 8 months it’s lived in the down tube it is rusted to shit. Down tube bag is always wet and gross. The wives downtube bag is the same, c02 cartridge rusted to the point the threads are useless. I wouldn’t use down tube for anything but a tube or light jacket. 
I had a top tube mount made from 3d printing to hold the edc tool and a tube, worked great.