I have a large number of these milk crates for storage. Although they stack well, it makes getting things out of the bottom of the stack unnecessarily complicated, and it also takes a lot of time to move the stack. I put a furniture moving dolly under the stack, which made it extra unsteady.

So I built this rolling organizer that lets me access any crate, move the stack around, and has some extra pegboard for hanging items. The final height rolls just under standard height garage doors.

The frame consists of squares of 15/32nd plywood, and a lot of 2×2’s cut to the exact same length using an endstop.

You could assemble the whole tower very quickly if you used pin nails to hold things together while the glue was drying, but I just took my time doing one layer at a time with clamps.

Because only one of the four wheel mounting holes was over the 2×2’s, I augmented the   single deck screw with gorilla glue to mount these harbor freight locking casters.

I cut the squares of pegboard after I built the frame so that I could set my table saw fence just right for a friction fit vertically. I made a few test cuts smaller and smaller until my first   piece fit exactly. In addition to providing places to hang miscellaneous items, the   pegboard acts as sheathing to add rigidity to the tower. I wouldn’t   recommend building a tower this high with no side pieces.

Here is a video of the build process.