I use Pottery Barn Kids catalogs for crafts more than shopping and they are great for this craft although old Christmas cards would be perfect too.
1. Gather your materials. You will need a blank note card, scissors, double stick tape, and a catalog or old Christmas cards.
2. Cut images from the catalog or cards.
3. Tape or glue onto your blank card.
4. Add some inside too with your message. Don't forget to leave ample room for emergent writers to write their names.