Useless Box for Tower Pro Servo

Edit 17/11/17: I have added an extremely bad wiring diagram to the images. Hopefully it's clear what I mean by it - let me know if it's not.

This is a remix of the Useless Machine by ericthepoolboy, modified to use the super common (eBay is full of them) Tower Pro SG90 micro servo. I modded the main box to fit the servo, then adjusted the activation arm as well. The only other changes I made from the original was the addition of some 'mouse ears' to the main box and moving lid. These 'ears'