I've seen some helmets made from them as part of a suit of armor at SCA events.

Bill

----- Original Message -----
From: "Jere Hawn" <jbrschawn@EARTHLINK.NET>
>
> I have two propane tanks from my BBQ that have the old valve and since 1
> Apr I have had to buy two new tanks (new 5 gal tanks are $24 while new
> valves are $22))  Has anyone come up with any nifty thing to do with the
> old tanks?