Ornaments
Flat ceramic ornaments printed on both sides, so they read from either direction on the tree. Baked goods, matcha, mirrorballs, zodiac animals and a few things that have no business being on a Christmas tree and are better for it.
Sold singly or in sets of 3, 5 and 10 — the sets are how most people buy them, one for each person they were going to buy a card for.