Holds a SparkFun BreadBoard on top, Arduino Uno on the side, and A "Really Useful Box" in the middle.
This uses:
Sparkfun's BreadBoard:
https://www.sparkfun.com/products/9567
Really Useful Box 0.14L
Very useful for holding electronic components. I scored mine at OfficeDepot on sale 2 for $4! I'm sure if you wanted to whip something up in cad to fit the storage location, it wouldn't be too difficult.
Arduino Uno
Slim Arduino Uno Case by Tortsen:
For ease and convenience I included the STL's from his files.
Located here:
http://www.thingiverse.com/thing:28971
Proto2.STL | 6.5KB |