Sleeves for dungeon cards?

[xfollowthereaperx]

Now that I man'd up and bought myself about 250 sleeves for Munchkin, I'd like to get a hold of some for my Dungeon cards.

I think this task will be a little bit harder, as they're 112x87 mm. I do have a cutting board so anything close will do. What do you guys use for sleeves for them?