In the recent sandbox thread Stoot said:
• More "toy" items to support free play and player-created games: like the ball that people started worshiping, we really should have dice and cards and other toys which have no direct purpose in the existing mechanics of the game. (Ideas on this front welcome.)
We don't need to be asked twice!
I love this idea of toy items. I'll start us off:
How about a deck of collectible cards that are loosely based on the Tarot. Imbued with glitchy mythology and featuring pictures of the Giants as part of the Major Arcana. These could be collected, traded and played with in several mini games.