I found this idea at FamilyFun.com. Aren't these awesome?
Go here to get instructions on how to make them!
Great kid project and you could use all kinds of buttons.
Go here to see these buttons on Etsy. If you used all the same shape it would work and you could use the napkin rings all year!
Go to oriental trading company to order the below buttons. Oriental Trading is a great resource for crafty items.
I love the holly buttons.
Go here to see these beads
Wouldn't these candy mints be perfect for your Christmas napkin rings?
Great project to do with your kids! If using beads, they will have to be flat like the ones above.
I'm going to make mine out of these beads that I found on Ebay. I think I will also paint my popsicle sticks black.