It's a (very large) Super Mario pen and pencil holder! There are several configurations available depending on how much desktop space you have and how much
...Plus filament you want to use. The rendered images after the photo show some options.
The flagpole is a pencil. The flag.stl and flag_base.stl have an 8.5mm hole in them. It was a bit too large for the pencil I used, but fits a standard Bic Round Stick pen. You can scale the base and flag a bit to get the right fit if needed.
The mushrooms are my design as well. Get those here: http://www.thingiverse.com/thing:1375575
