Gennifer Choldenko

Exciting news! Compendium has joined the Penguin Random House family, bringing a proven line of bestselling, sentiment-driven gifts to our extensive and ever-growing catalog. Since 1985, Compendium has been creating meaningful moments with beautiful, thoughtfully made gifts that center connection and celebrate occasions both big and small. From greeting cards to inspirational books to impulse-friendly add-ons, Compendium

Meet two friends who think they’re building imaginative worlds with blocks but come to realize they’ve been building something far greater–a sturdy, solid friendship–in this picturebook by award-winning creators. Two kids build entire worlds out of blocks, cardboard, and imagination. From boats attacked by a sea creature to a castle crumbling into the ocean. And