Here's a Clifton Comics gift certificate, lovingly drawn by the proprietor himself. (I also bought some Magic: The Gathering cards from him, as stocking stuffers-- I'd usually buy these at a Target or something so I hope buying from him made a better impact?)
Clifton Comics website: http://cliftoncomics.com/
We have here the much-adored VisuaLingual "seed bombs"-- another great stocking stuffer that my brother loved. No one in my family had heard of these "guerilla gardening" bombs, and when I explained the concept they were really excited. I might be buying more of these in the near future...
VisuaLingual's Etsy: Midwest Seed Bombs
And last but not least, my own favorite... the Steve Zissou finger puppet. I first came across these puppets at Crafty Supermarket, and snagged a business card with the Etsy address. Maybe not the most USEFUL thing in the world, but I think the unique artistry and the adorable detail made this 100% worth it!
AbbeyChristine's Etsy store: Steve Zissou finger puppet