[DonRotolo]

Many of our assembly tasks are done on the solid rolling table, but for under-bot access we just put it on our competition cart. It is made from 1.5" 80/20, has a 3-drawer Craftsman tool cabinet (with latching drawers) at each end, with a flat top. There are four "legs" that come up to support the robot. These legs need to be reconfigured for different robots - usually just relocating them (trivial with 80/20) so the 'slots' in the ends fit onto the chassis securely.

Dropped objects land on the cart's top.

An advantage is that, at competition, the tools are always with the robot. Disadvantage is that the cart weighs in at about 200 pounds.

When push comes to shove, we have a fixture made from 2x4s that supports the robot frame several inches above the table.