Most kits use EVA foam (Ethylene Vinyl Acetate), plastic, cardboard, and a wood composite for the tabletop versions.
The picture-frame craft kits are sized for a 3 x 4 photo and include magnets so the finished frames can be hung on a fridge or other magnetic surface.
Most listings are labeled “Suggested Age: 3 Years and Up.”
They use self-adhesive or peel-and-stick foam panels and puzzle-style assembly, so no glue is required.
Kits commonly include self-adhesive or peel-and-stick foam panels, sticker sheets (often 100+), foam candy-shaped decorations, instructions, and sometimes fake snow.