Yeah, I know that it's not about brewing, but brewing and smoking go hand in hand!
I have a 100lb propane tank (at least I think it is...):
About 4 feet tall
Tare Weight = 71lbs
This still has some propane in it, and it has the old style propane connectors so no one will fill this up & converting it to the modern connection costs too much.
This is a perfect body to build the smoker / grill that you have been dreaming about for all these years.
It's yours for $25 or a trade - a corny keg, a bunch of your homebrews (I like IPA, stouts, porters...don't like sweet beers), ???.
I'm in Jamaica Plain.