It's impossible to use basket on foldable bikes so i came to this idea, a cargo hook to carry my backpack while commute or groceries bag. Really useful for city bikers!

Conical shape of steam makes the hook doesn't slip, i add double sided tape to avoid turning. Its heavy enough to carry more weight than bike still being rideable.

Hole is made to use carabiner.

Print, add 4 ties and cargo!