We use 2 sticker charts. Something amazing earns a short term sticker. A finished practice earns a long term sticker. He can earn 7-10 short term stickers for a 20 minute session of computer. When he gets to 100 long term stickers there is some bigger incentive. He has gotten to pick out a restaurant for us to go to (one that coincidentally has vintage computer games) and has gotten Pokemon cards.

I wonder if he'd like a Webkinz? I bet both DS7 and DD4 would. DD4 never had any interest in the computer (compared to her brother anyway who was begging to play at 2). The last month all of a sudden she can and will try to play almost anything her brother is doing.