If you have any type of molding, impession, or even if you got ahold of someone's key and TRACED the groove patern onto a piece of paper (carefully) all you have to do is go to walmart and get some key blanks. If they say they won't give them to you without cutting them, then just wait until the key-cutting center closes at night time (usually around 9ish), go behind there, grab the keys you need and then either steal them or pay for them at the regular check-out line. The cashier won't know "not" to scan an un-cut key.
Then just get a wood file from the hardware store and file down the key to the groove pattern you attained from whatever way.