Supplies needed: scrap pieces of 2×2 and 1×2 lumber, saw, nails or screws, and 4 caster wheels. TIP: get the larger size of caster wheels that are attached by screws.
Cut 2 pieces of 2×2 the width of the pot saucer. Using the pot saucer as a guide, cut 5 pieces of 1×1 wood the width of the pot saucer plus extra width for the two pieces of 2×2. The pot dolly should be wide enough for the pot saucer to easily be slid under it or removed for draining.
Nail or screw the 1×1 pieces on the 2×2’a. Turn the dolly over so that the 2×2’s are on top, and fasten a caster at each corner. Your pot dolly is ready to go.