I believe 4901 is using
these Sterilite containers for anything past hardware. We stole the idea from 254; each time we have a collection of items, it gets a bin. (Speed controllers, AndyMark gearbox parts, Vex gearbox parts, throttle motors, pneumatics components...) If we get too many parts for one container, we split the container and re-label them based on the new contents.
At home, they sit on a black metal shelf. When it's competition time, we put them in FRC totes (six fit in one) for easy transport.