Let's Make Robots!

cleaning robot

hy..i'm italian...so excuse me for my english..this is my idea...i want to build a cleaning robot based on this robot ...what i want to do is: build thant robots and put under it one of this:

51dL1hDQJPL._SL500_.jpg...it's a robot for my mom :p...what do u thing? and can u tell me  shop where i can buy all what i need? because i'm in italy and i prefer to buy from just one shop for shipping cost...thank u!!!