START HERE
So you want to build an intake
Well, probably need to. How do you choose where to start? Try not to duplicate the knowledge contained here: Game Manual 0
"touch it - own it"
Active vs. Passive
i.e. claw vs. roller
Squishy vs. Rigid
A maxim of robotics handed down for generations reads thus: "For squishy game pieces use hard wheels, for hard game pieces use squishy wheels"
Stick out vs. Internal
have it stick outside your frame? drop down in front? leave a gap for things to go through?