I would create a full human-sized robot to practice chess with, vacuum and cleanup my room, and much more!
By Alexinator40
Other robots from Synthiam community

Mita's First Robot From Bits Around The House
I ordered the EZ kit as a project to do with my 6 year old son. We watched the EZ-box video and intended to build that...

Ezang's The Watching - Talking Eye That I 3D Printed :-) Two...
My watching, talking Eye - he sees youuuuuuuuuuu Better be cool

Urbanh's Target Bot
So heres the Target Bot. D7 is the main servo. D8 is the switch, which uses the GND and Signal cables (no resistors...