We have blogged previously about how to make $80 with a copy machine... the ONLY problem with that blog is that you need at least $1 to carry out the simple business plan. For this idea, you don't need a REAL $1... just a PLAY $1.
Step by Step business plan:
1) Obtain PLAY $1 bill. This should cost you significantly less than $1. If it costs you more than $1 hopefully its signed by Pablo Picasso.
2) Locate on the PLAY $1 where it says PLAY
3) Cross out the word PLAY and replace it with the word REAL
4) Optional step: Color the money green (sometimes the PLAY money comes already green... in that case you have saved yourself at least 10 seconds off of the time it takes to execute this business plan)