Unfortunately, and understandably, a lot of stores aren't open today. This gift will only work if you're planning on celebrating Christmas this weekend. You'll have to wait to go out and get the materials tomorrow.
http://www.moredesignplease.com/moredesignplease/2012/1/16/diy-fork-ring.html
I hope everybody had a very Merry Christmas and enjoyed the 25 days of wearable, handmade gifts!