Can someone give me some info on building a light in this manner?

There was a fair bit of info kicking around a couple years ago. You might want to scan this thread....
http://www.halloweenforum.com/halloween-props/92294-pics-new-led-pin-lights-everyones-buying-4.html

Check post 62 there for one. Otaku has wired his up to a 9-volt. I also remember someone came up with a way of using...a hunk of dowel and thumbtacks to get around the soldering part. Let me see if I can find it.

Post 56 of the same thread has a bit more info on what Otaku used. Having problems finding the dowel thread - I think that was actually for hooking them up to use a wall wart.

Post 45 indicates that the batteries are..."1130/1131 = AG10"

Hopefully someone who knows what they're talking about will just jump in with full instructions.

Thank you for the links on those posts. I did see there were some for sale for 13$ plus shipping somewhere on the forums. I was hoping to beat that cost and do it myself since I already have a couple dozen I bought from niftymart last year. I noticed when using them the batteries only lasted a matter of hours. I was thinking to use a battery pack, but not sure how to wire it up or what Exactly is needed. The 9v battery looks interesting. In the photo from the seller here somewhere the light is mounted on the top of the pack. This also looks like it makes for a good base for placing the light.

Any other advice on converting this from the button battery to the 9v clip on or an actual battery pack? Thanks.