Dealmonger: Ring Hammer

Despite the name, these rings are not meant to be worn on the hand but stuffed into strange places in and around you car and help pound out dents. Auto Body Tool Mart has them on sale for $22.99 — that may sound steep, but try finding something else that will work (then go buy one of these).
Used for auto body sheet metal shaping and dent repair, the hammer allows you to access small spaces and quickly change the hammer head shape as you work the metal. It’s sort of a cross between a dolly and a hammer. Plus, it looks cool and would make an excellent paperweight.
Ring Hammer [autobodytoolmart.com]
Hmm, looks like it could be a decent meat pounder as well!
I use these and they are worth every penny.
I will also add that Auto Body Toolmart is where I get just about all of my supplies and have been very happy with them.
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=90649
Harbor Freight carries these at a much cheaper price. For something that’s biggest function is being a formed piece of metal, the quality is acceptable as well. I got one on sale from them about a year ago for 2.99