If you have a problem, an old bicycle inner tube probably can fix it. For example, the velcro on my saddle bag was failing. I secured it with an old bicycle inner tube. Another problem: the pannier on my commuting bike would fall off when I hit a big bump. I secured it with an old bicycle inner tube. Everybody has problems. Old bicycle inner tubes can fix them.
Old bicycle inner tubes are like big rubber bands. They’re strong and elastic. You can tie them around anything to provide protection or tension. Moreover, all bicycle inner tubes come in a stylish black for no extra charge.
If you’re a cyclist, don’t even think of using tubeless tires. You need inner tubes.
If you don’t ride bikes, get friendly with a neighboring cyclist. He or she is likely to have a continually expanding supply of inner tubes that have flatted.