I created this bit holder to hold bits in my tool roll for my Fix It Sticks (fixitsticks.com). These tools rock. They were shipped with small plastic tubes. The tubes were compact but it was impossible to get one bit without dumping them all out. Made things tricky for repairs mid ride. This bit holder holds 12 bits and compactly fits in my tool roll and each bit can be removed independently.
Printer: Metal Printrbot Simple
Resolution: 0.15mm layer height
Filament: 1.75mm Midnight Blue PLA
Update: I glued 1/4" x 1/16" magnets in the bottom of each bit location to hold the bits in snugly. This also allowed it to hold onto my steel bike frame, and place my bits wherever I was doing a repair.