There they are, waiting ... to:
Not to mention reading those tiny numbers anywhere outside the photo-studio!
We have another "Go-Bot", to take one shape in storage, and another in use.
There is a peg for each socket, and the biggest possible labels for the sizes.
We're looking at the top and front of the rack. Thicker material at top and bottom; thinner on the back. The pegs are dowels that have been filed so the sockets go on easily. The pegs are tall, so the sockets don't wander off TOO easily.
The back/top are one piece, and fall flat, ready for the next role.
Another view. Double sets of pegs; double sets of holes.
Bottom view. You can see the dowels
The rack and sockets ready for use.
Take the rack off its base, stand the base on its edge, assemble, lay the assembly on its back, and now it's a tray, ready for the drawer.
All sockets enclosed, so they won't scatter!
Make yourself a Go-Bot for each run of sockets!