by mechadense, published
Originally intended to be a tool that enables one to bind your hair together with only one hand it failed miserably, but since it doubles and triples as a finger trainer and a slingshot I'll still put it here.
On suggestion by Cameron renamed from
â€˜Cool Finger Cup Toolâ€™ to
Adjust for your fingers sizes, print a couple of them and use them in some creative way.