Engine parts organizer

So last time I took an engine apart, I tried to organize the parts to make sure everything went back where it should.

As careful as I tried to be, things rolled around, moved around and cardboard boxes got oil soaked and came apart and it was a mess.

I was looking at these parts trays, wondering if they are worth the money as problem solvers.

How do you all keep engine parts organized during a disassembly/rebuild??