Here is a preliminary design of a dual tray assembly that can carry both an Arduino and a mini bread board:

Here’s an underview, showing how it all fits onto the robot body:

As is, the tray assembly can’t be made from laser cut parts. I’ll have to think about that. At any rate, I need something like this if I want to reprogram the robot without having to continually move the chip back and forth from the Arduino to the breadboard.

I wonder if there would be a market for the robot plus tray assembly. The robot kit would actually cost less than the Arduino!

(You’ll notice that the illustration shows an ATMega chip on the breadboard. Of course, if you have an Arduino, why do you need a chip on the breadboard?)