One blaster conversion I've seen quite a lot, both sci-fi and steampunk, is the Nerf Maverick Rev-6. This quick google search shows how popular it is, as well as showing up a few others too. I was on iwoot just now and found this page of stuff. Personally I can see thirteen or so that would make excellent blasters or steampunk weapons, like the Barricade RV-10. I'm curious to see if anyone has already used one of these guns or anything similar. Pictures, hints, tips, etc, would be awesome too.