Mini-Roomba Stacking Clips

For if you wanna stack mini-roombas for charging, or the beginnings of a method by which to deploy your $50 droid army..

One either side, gotta be a tight fit, so hammer em in with a tiny hammer. Or glue em if you're lazy. You could probably even screw them in on the side, but I've not opened one yet to see if that'd hit anything important and rigid.