Realcent.org

Original Nintendo Entertainment System AC power supply that still work can net you a pretty penny. Or for parts.

http://www.ebay.com/sch/i.html?_nkw=Ori ... Complete=1

Are there any other adapters out there that are worth more whole than scrapped?

I would guess anything used for a specialized or expensive tool could have some value above scrap. Good thinking.

I've tried cell phone chargers, but they are a tough sell. Too many of them out there.