Noah's Ark play set, because animals and boats are fun.
Choosing Keeping's dedicated album for collecting the little sticker labels from grocery store fruits.
All the Feelings tee by Fairly Friendly (the motto of three-year-olds everywhere).Kukkia Oekaki Dog House drawing board.
Caroline Z. Hurley mini-moon quilt.
Lyra Ferby triangular pencils, just right for little hands.
Marble run (fun for parents, too).
Dans la Lune by Fanette Millier — a beautiful picture book that simply illustrates the phases of the moon.
Grimm's stacking rainbow (so useful for tunnels, little houses, and colorful mountains — also available at Acorn Toy Shop).
Tenzi (a game everyone can play).