Here are some links to ones I've eyeballed. Haven't made any purchases, but I like the idea of keeping my batteries warm and dry.

http://www.lighthound.com/index.asp?PageAction=VIEWCATS&Category=158

http://www.inanycase.com/Merchant2/merchant.mv?Screen=CTGY&Category_Code=BATT

http://www.nimhbattery.com/batteryholder-index.htm

http://www.greenbatteries.com/batteryholders1.html

Green Batteries has a wooden holder as you described. Please let us know what you get and how it works out...