Sand each of the crates smooth, then spray with primer.
Paint each of the crates, inside and out, with spray paint.
Stack the crates on their sides, two high. Use the wood screws and drill to secure the crates to each other. Arrange the crates to make a square table base and use more screws to secure.
Have the home store cut a piece of laminate table top four inches larger all around than the top of the base.
Mark a rounded edge at each corner and use the jigsaw and reverse blade to trim.
Use the iron to attach laminate trim around the edges of the table top.
Attach the table top to the base with screws and drill.