I would think a robot that can fix your iphone in 10 or 20 mins will be really cool or a robot that can instantly charge your phone without a plug just batteries
By AkalinDoga
Other robots from Synthiam community

Johnnybib's Ezrobot Elasitc Band Turret
Elastic band turret. Its cool... so I made it. Aiming is hard... Sorry for garbage quality I filmed it on a Galaxy S II...

Jp15sil24's 3Wheelbot
https://www.youtube.com/shorts/ws-IgqWD5tk My goal is to build a bigger humanoid on wheels. As i am not very experienced...

Tony1952's My Rolly Boxbot
My Wall-E has a new playmate with tracks, my own Rolly. My Wall-E has a new playmate with tracks, my own Rolly. I made...