I use a Treasure Chest with my 4 year old. It's got a bunch of things in it - cars, dinorsaurs, stickers - just stuff I pick up that I know he'd like. If he's good all day, he gets to go in and pick one thing. I painted up a wooden box from Michael's real cool and glued little wooden things all over it - he loves it. We started out with 3 visits a day, now we've extended it to all day and so far - so good.

We also use his favorite movie - Toy Story. If he's good, we'll usually watch it in the early evening.