i started by wrapping different ribbon around each of the three card/envelope packs. (see, in the lower right-hand corner?)
then, i decided to make some small graphic decals for two of the packs...which were super simple. i just took my bicycle rubber stamp and black ink pad, stamped the yellow paper, then took my 1-1/2" round paper punch and punched out the bicycle. (hint: if you are going to use a paper punch to cut out something you've already stamped, slide your paper in the punch upside down so you can see your stamp on the underside of the punch. this will ensure you're lining up your stamp in the center of your punch shape.)
our little thank you gift turned out to be a big hit and i'm pretty sure paper source has a new fan in my lovely neighbor.