Spore/Cactus pen holder

A groovy pen holder. I was getting annoyed with my coloured pens rolling all over my desk, so I created this funky spore/cactus thing. The holes are 9mm diameter and should hold most pen types. If you want to hold bigger pens, just scale the design up. It has 11 holes, each about 3cm deep, and 5 decorative crater things. I was able to print this without support structure, although there was minor bridge-droop (if that can be the term to use!?). Enjoy.