Halloween Costume Ideas?

Sadly the last couple of months I have had a lil stress on the back of my mind and as the days creep closer to October 31st, my stress is increasing and INCREASING. I am trying to decide what in the world Brayden should be for Halloween. Luckily at his age I still have a huge influence on his costume. I usually try to go for something a lil unique/original. Here is a trip down memory lane to see his previous costumes:

His Baby Halloween Costume: An OSU (Oklahoma State) Fan...You can't tell but his shirt and shoes were OSU along with carrying an orange pompon.

First Halloween: Scarecrow-Homemade Style

Second Halloween: "Lil Stinker" / Skunk

SideView:

This was also the year it literally turned out to be 98+ degrees heat index outside. No Joke! So we definitely had to shed the top portion of his costume before it was even over with. (The previous year he was in double layers and still cold.)

Third Halloween: Woody (Apparently this would have been perfect for this year with the new Toy Story/Toy Story2 3D version coming out to promote Toy Story3.)

So do you have any cute/creative/unique ideas for a boy costume? We're not really into anything scary. His birthday party was a pirate theme so that has crossed my mind (but not really unique enough for me). I also thought about a rockstar because he LOVES to play his guitar. Luckily my mom is a pretty good sewer, so sewing can be involved if necessary. =)

UPDATE: Well after giving him MANY suggestions, the one costume idea he kept coming back to was this one:

So it's official! We ordered it from the Disney store today and hope to get it in 5-7days. It's really more money than I would have liked to have spent on a costume, but I think we will get a lot of use out of it...especially when we have another blacklight party. =)