Ratcheting T-handle allen wrench set with interchangeable hex keys?
A modular system of shelving that permits quick access to
standard size parts storage containers without having to unstack the totes sitting on top of the one you really want. One that permits a team to integrate them into their pit in a variety of configurations (8 high x 1 wide, 4 high x 2 wide, etc.)
I second the request for a compact, portable, six-slot battery charging station design that utilizes current kit chargers and can be built with commonly-obtainable materials or old KOP stuff that hardly anyone ever uses. Put a leadscrew on it! Recycle those old 2009 rover wheels.