I had a couple of those BernzOmatics!
They were great. Mine didn't have the bottle opener though.
I'll have to be on the lookout for them.
Dryer lint, TP and paper towel tubes, melted leftover candles and/or paraffin.
Pack the tubes with lint
pour in wax
let cool and slice into thick coins with serrated knife.
You can get 9 pounds of paraffin at big box craft stores for $25
I do a batch about every other year. Great for camping and beach fires.
-Rob