Printed with 75% infill. 100% probably wouldn't hurt.Heavily inspired by 'gijs' with his "Ulti-foot": http://www.thingiverse.com/thing:25950Designed in Autodesk Fusion 360.Comments and tips for improvement is welcome!
Technical
Silicone USB-caps (i got mine from some single-use Data loggers meant for some medical stuff) - It would be way more skookum to print some caps with flexible filament, but i haven't tried that yet.