CollageKit

Collage Kit lets customers combine the artwork you provide—logos, characters, photos—into a collage of their own. Upload artwork in the admin, toggle it live, and a "Create a collage" button appears on your product pages. Logged-in customers place, rotate and scale artwork, add text, and preview the result on the product mockup. Collages are saved per customer and can be resumed from the product page or their account. Items added to the cart carry the finished image on the order.