Hmm... we have a product idea...
This design is by Sublevel Studios by way of our friends at Mighty Fine, a judge's prize winner in one of their Star Wars shirt design contests.
The concept of the mouse droid itself is a lot like the Stormtrooper. Armored. Interchangeable. Tiny parts operating in a much bigger system. (Theoretically) powerful alone but much more effective when en masse.
A young trooper plays with an R/C MSE-series droid on the front of a charcoal grey, 100% cotton shirt. Machine wash cold. Tumble dry low or lay flat to dry. Imported.