making stoves and pots

I love my husband for so many reasons...one being that he loves to try new things, make things, take things apart, and build things.....his newest project is making his OWN pots and alcohol stoves for his 5 day hike on the Apalachian Trail coming up in May.  I guess the stoves to rehydrate food are pretty expensive and he learned on YouTube that you can very easily make your own using aluminum bottles/cans (ie cat food cans, soup cans, deoderant spray cans, beer cans, etc)...he sands them down, uses a special can opener to cut the lid just so, cuts and glues, pokes holes and then he has a stove....and not just one...over the past three weeks, he has probably made 20!!!!!  He times the amount of time it takes the water inside to boil, how long it takes the alcohol to burn off, etc.  He is trying to build the perfect one.  Cool thing is....they are super lightweight, and apparently that is the KEY in taking stuff on your back as you backpack!  John Daniel has loved watching all of his daddy's creations!