I needed a way to store my caps so that they were easy to get to and were stored safely. Lid's makes a cap collector that is pretty not cheap and I found a duplicate here http://www.thingiverse.com/thing:340493 but my printer was having trouble with all the curves printing without support (and I hate printing with support just because) so I designed this instead. I've printed in ABS and with 40% fill. I can fit 3 at a time on my bed.once printed I have placed indents (I couldn't get holes to design straight through the ends) at the ends that will need to be drilled and then you can place either string or, as I've done, wire through the hole and knot it to prevent it from sliding through and just hang.