Our kits were upgraded recently to include foam pads for the bottom of the hexapod and megapod projects. These pads prevent dance moves that slam the robot to the floor from damaging the hip servos or leg hinges, and keep the electronics from shaking up too much.
The Vorpal Hexapod version is about 2" x 2" by 1" thick. The megapod version is 4" by 4" by 1.5 inches thick.