eek Have you guys seen these: https://www.servocity.com/html/micro_gripper_kit.html
A new micro gripper from servo City for $6.99, WOW! 
Asked
— Edited
Custom Movement Panel
— Custom Movement Panel maps directional commands to scripts, adjusts per-wheel speed (0-255), and integrates with joysticks for unsupported motors
Try it →
AWESOME FIND!
Gotta love servo city
Yeah those are pretty cool, thanks for sharing! Any idea if they are lasered acrylic or aluminum/steel? I'm guessing they anodized aluminum but I can't be certain....maybe someone could call them tomorrow, I just tried and they were closed.
Well don't underestimate the power of Twitter, turns out that servo City is active on Twitter and I got a response back from them very quickly, the material is: 1/8" Delrin