There are many possibilities with this hack, for example, you can turn the controller into a base-less joystick, or put it on a helmet and control it with your head.
this will also work for R/C tanks (or other two motor drive stuff) except the switches needs to be placed diagonally
Another possibility to explore is making a mini segway, if you can get the tilt switch sensitive enough and the controller mounted onto the car (the car must be wheelie-ready). This might not work so good.
Below is two pictures of the car I'm working with (the front end spins, not steer, but it is not a problem with some practice)
You will need:
- r/c car
- tilt sensing switches (see step 2)
- hot glue gun
- soldering iron
- some pvc pipe (see step 4)
- collection of hand tools