bottom of the controller.
trim the edges and turn right side out.
put stuffing inside the pocket.
fold top edge of the back piece of felt in but leave the top edge of the controller face sticking out to create a flap.
stitch the pocket up to enclose the stuffing.
attach the alligator clips to the appropriate stitches on the top flap of the controller.
find a game to play and have fun!
clever control design. this would be fun to use. 