I saw a free printable design at twig's website last year and I knew I had to try it out. The tutorial is written so that you can set up your printer to run the bag directly through, but my bag kept drifting so I printed of a rough draft on a piece of recycled notebook paper. I then positioned the bag to where I wanted it with just a few pieces of tap, and then ran it through and it held it into place.
I painted some clothes pins and added glue and glitter (everything is better with glue and glitter), then made these little tags with some chocolate heart candies.
...filled the bag with cookies (recipe tomorrow) and then shipped my calories out to deserving friends.