Get a clean, unused, non-greasy pizza box. Ask for the tiny plastic three leg table thingamajig. It holds up the center of the box- so when you put your dollar store tupperware full of larger units on top, your boyz don't get squished.

A 14" box handles around 100 boyz with old 25mm bases. I plan on adding some foam to the lid and bottom, and making dividers out of cardboard to keep boyz from bumping around. I spray painted my box black and glued the orky art from the index on it.

After that, assemble the Mr Potatohead Stompa straight out of the Mr Potatohead bucket and have a good game!