Hey, those are both pretty clever!
I'd suggest that you make them nibble their PCs as they take damage, but I don't know what you'd do when they got healed...![]()
Get the Chessex "Pound-0-dice" I saw Troll and Toad had it for 22.99, and you get a hundred dice. Do some kind of game and each time they do something cool, they get to pick a dice at random.
Not a bad deal for people without many cice.
I'm kicking myself, as I passed up an opportunity to purchase for only $1 a "Last Supper" on black velvet.