Ultimate Breadboard2 Parts Alpha

A few years back I made this baby: http://www.amateurengineer.com/?p=400. While it was nice to wokl with it was very unflexible so I decided to dismantle the old parts and remakre its elements as stackable modules. So here you go.
To see if you like I recomed printing a base_bottom with a length of 1 and one base_top.stl - its a prepared top to hold 10 banana-sockets for interconnect stuff.
If you have any idaeas for new modules pls comment!
**Modules**
**Arduino:**
Parts needed
- 2