I keep my old, flat tubes and use those. Just cut the stem off and slice the tube down the middle so it can lay flat. Then simply wrap it around the chainstay and secure with a ziptie at either end.
Its not the prettiest of solutions and I wouldn't do it on anything but the chainstay, but its almost free and takes little effort to put on or remove. It also works.
Been on there for about a year and a half.Still hanging in there.
Im with sspomer, mastic tape is the shit! Looks super clean, stays put, and it keeps everything nice and quiet.
I use an old tube with zip ties and electrical tape to hold it together
I used road bike bar tape on my sunday and that actually worked really well. Kept things nice and quite as well
Does the mastic tape peel off easy when/if you want to take it off?