I had a few ideas, initially I thought of stuff we could do back home. [Which isn't particularly possible here, alas.] Here it feels more likely solar power or a mana wish would probably be a good power source.

I had a few ideas of how to make solar panels built into Spider-Bot. The main body could be a lighter material to keep continually absorbing sunlight since the robot isn't particularly big. [He mimes a specific hand held size.] Anything bigger would take a lot longer to charge in theory.