I was thinking of using them initially. I think "tall boy" 24 oz cans would probably work better if they are wider. I can't recall if they are simply taller or if they are wider than their 12 oz comrades. It's been awhile since I've had one.Old beer cans would do for cheap molds.
Oh! I just now realized that you mean cutting old beer cans and using the cans themselves instead of a mold for the foil! I would never do that. Being a Michigan resident, beer cans have a 10 cent deposit here. I'm sure the aluminum foil is far cheaper.
Thanks for the kind words everyone! Glad to see you are still alive and kicking, Bear!