Realizing that we only have 12 days left until we celebrate Christmas and being that it was freeeezing cold in Seattle today (we've got a few flakes right now), we stayed inside and Bean and I decided to make our own gift tags while C took her nap. Bean drew one of her cute owls (upon my request) and I carved it into a rubber stamp. We stamped them on some standard packaging tags that I bought from an office supply store.
I used a rubber block that I bought from an art supply store, my trusty Lino cutting tool, an X-acto knife and stamping ink (we used silver and black). Here's a nice how-to guide on making your own rubber stamps.
Amended 12/17: To answer Esther's question about how I transferred the owl image onto the rubber: I had Bean draw her owl on a piece of paper with a pencil. Then I took the paper, owl side down, onto the rubber and rubbed the back of it with my fingers. The carbon from the pencil transfers the image nicely onto the rubber block. Voila!