I had lots of offcuts of various pieces plywood cluttering up the workshop, and rather than throw them away I decided to make a table top from them, using the laminated layers of wood as a feature.
I first checked each piece had a straight edge by holding it up against my tablesaw fence, and then ripped all of the pieces in to 30mm wide strips.
Some of the plywood pieces had some white paint on them, so I sanded the paint off on the belt sander.
Then I could glue up all the strips in to a piece that was roughly 600mm square.