We’ve come across examples of bicycle inner tubes upcycled into a variety of items: jewelry, wallets, furniture (see photos of ‘em here).
Now here’s a different use: as an organizer/holder (for keys or other small items), made from inner tubes and tire valves attached to a piece of MDF.
The holders are available via a German DaWanda shop (here) that also sells key rings, handbags, coin purses, mobile phone cases, and other accessories.
(Spotted on Recyclart.)