This is my version of the useless box. I was searching the net for a rigid one and one that my things could fit in, to print. But there was no one. So i drew this one in fusion360 having in mind that it would be easy to print and easy to build.

I use a standard size modded servo (futaba FP-S148) here is a good instructableshttp://www.instructables.com/id/Remove-a-Servo-Controller/

A micro switch http://www.ebay.com/itm/10-pc-TEMCo-Micro-Limit-Switch-Lever-Arm-Subminiature-SPDT-Snap-Action-LOT-/281353659655?hash=item4181fc2507:g:xcgAAMXQ9otTj4uW

A micro toggle switch 2 pole on/on

and a 4 AA battery holder

you need a bunch of M3 bolts and some M4 nuts and bolts.

https://www.youtube.com/watch?v=-TG3i88PaUQ

I'm making a video of how to put it together. but it will take a while. ;-)

Print Settings

Printer Brand: RepRap

Printer: mono mendel

Rafts: No

Supports: No

Resolution: 0,25

Infill: 20%

Notes:

3 perimeters top/bottom 1.4-2 mm depending on your layerhight.