I spent some time this afternoon altering Hubs' one-size-fits-all Mr. Incredible costume (Deluxe with Muscles!). I'm finding this year that I can make do with the pre-made stuff if I just jazz it up a bit. I took in the legs and the torso, and tacked up the shoulder “muscles” so they wouldn't be weird biceps.
My costume came without muscles (because I'm so ripped already), was a steal at $16, and I don't think it will need a lot of alterations. Plus I found some elbow length black gloves for a dollar. A dollar! I chuckle a little to myself when I hear how much my friends are spending on their Halloween costumes.
Some people call me Martha Stewart. I prefer Mrs. Incredible. :)