Made another one from the bottoms of truck bedliners that had been taken out to go to the recycle bins.
I did some "creative art" on it, sealed every crack and crevice with the spray foam stuff, put some sliding plexi-glass windows in it and on a cold day, you can take the little buddy heater and hunt in a T shirt and shorts !

"As long as you're green you're growing... once you're ripe you start to rot". Ray Croc

Ecclesiastes 10:2 (NIV)“The heart of the wise inclines to the right, but the heart of the fool to the left.”