1) Laser mount: The Laser mount adapts a small laser module to a mounting hole preexisting in the long range IR distance sensor. (Mounted on the Two-Axis servo pointer.) Board adapter: The "Compass mount" adapts a small Radio Shack proto board (holding the compass) to the holes on the robot chassis. (Mounted on the back up top to get it away from the WiFi board in the front.) 3) Wheel hubs: Awesome wheels by destos! I am also working on an adapter to connect them to the DF Robot geared axle... My "V3" appears to work well and should allow other kinds of wheels as well. The conversion will take a while `cause I also have to convert the controller and the bot from 2 wheel drive to 4 wheel drive for the the Mecanum effect to work. 4) Shaft encoders: Details in the works....