I need boxes of plywood

I’m moving in a few days and decided I’m going to take some of my keyboards and store them away in some solid boxes. THIS would be ideal but I need three of them and they won’t arrive until after the move date (next weds)

So I think to myself, “myself, there has to be someplace that makes a basic plywood box for shipping crap in”

I just can’t think of where to start to look for something like that.

I’ve called some packing and moving companies but they only have boxes made of cardboard.

I’d make them, but I’ve already packed the tools.

Any ideas on where one might try finding plywood boxes?

Call the moving company and ask about crating services. When my mother moved to North Carolina from Pennsylvania, the movers brought in an outside crate fabricator to build a custom crate for a large antique wall mirror. I don’t know how much it cost, but it didn’t take long to build it, and the mirror arrived in perfect condition.