I also blogged about controlling Android using a USB keyboard and mouse via a USB OTG cable.
Hang on... the MakeyMakey is USB... Android can be controlled via USB... CAN I CONTROL MY ANDROID WITH FRUIT?!?!?!?
Why yes! Yes I can. Watch and learn, young grasshopper.
I couldn't find any games which said they could be controlled by a USB keyboard. Luckily, the mouse click on Android is interpreted as a tap on the screen - so any single tap games work well. I used the delightful Whale Trail, but other endless running games like the popular Canabalt also work well.
If you know of any Android games which can be controlled with just the arrow keys and spacebar - please let me know in the comments. I'd love to build a banana joystick!