I have not tried this but it looks like it might save quite a few $$$ on AA batteries.
http://gagfilms.com/6volt.html
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I have not tried this but it looks like it might save quite a few $$$ on AA batteries.
http://gagfilms.com/6volt.html
Or maybe not ,if you looked at a related video on the same site. only 4 large batteries instead of 32 small ones.