Amazon.com: Hygloss Products - Blank Heart Puzzle for Decorating, Jigsaw Activity, Use As Party Favors, DIY Invites and More - White, Sturdy – 6 x 8 Inches, 8 Pieces, 24 Puzzles : Toys & Games
28 Free Printable Puzzles for Toddlers and Preschoolers (PDF) - Empowered Parents