Depending on the size of the thing, either put a sheet down on a bed and make a nest so things can't roll away, or use a large "cookie sheet" -- actually a jelly roll pan, since a true cookie sheet has one upturned edge, not four walls. I have a nice low-walled plastic bin I use for things like that. I might have a spare, if you are going to be taking more things apart. A window screen, properly supported, can also work. It has enough rim to contain things.
On disassembly of things
I have a nice low-walled plastic bin I use for things like that. I might have a spare, if you are going to be taking more things apart.
A window screen, properly supported, can also work. It has enough rim to contain things.