Coffee Can Stove
You can make these out of a #10 can. If you don't drink enough coffee to have a #10 can normally your local Cracker Barrell will be happy to donate a few to you. They have green beans in them.
Cookie Can Stove
I was looking for something to create a personal Mess Kit stove out of for the Bushcraft USA class I'm taking and saw these holiday cookie tins at Wal-Mart. I only paid $1.50 for them since it was after Christmas. They are the perfect size to not only create a stove out of but also hold your entire Mess Kit when you are not using it.