PhotoPlay Photopolymer Stamp - Little Builder - Make fun things for the birthday boy with the Little Builder Collection Clear Photopolymer Stamps by Michelle Coleman for Photo Play Paper. The set includes 7 clear stamps on a 4in x 6in storage sheet. Images included are of construction vehicles, arrows, Birthday boy, and This way to adventures. Use the stamps with an acrylic block, your favourite inks, and the coordinating Little Builder Collection dies (all sold separately).