Instance builders or a source of them

[chaos018]

K, looking for an instance builder, one I can quickly learn and apply for instances for my players. Don't want to hafta draw them, lol. Anyone got a suggestion? Anything really will do but it's tough to decide what is appropriate. Trying to provide them a challenge without them rofl-stomping the game and becoming disinterested.

Edit: also, maybe some table for some loot. would be nice to award them with more than a hero point or pp. Something, that if they find interestinig, that could be made into one of their many devices to use personally.