Old gas bottles.

[Ancillotti]

I've been sorting out my garage/ workshop and discovered that I am harboring a number of old empty gas bottles (CO2 pub, Cougar, 2' & 5') that I've acquired over the years. Now before I get rid of them (how?)
Does anyone have any good suggestions of stuff that can be done with them.

 

[The_Yellow_Ardvark]

There are a host of post on here, just amble round and I am sure you will find something.