I'm taking a teeeeeny tiny itty bitty break from Halloweening to make stuff for Van Gogh. I'll be honest with you, I've been playing with Van Gogh since the day I got him. I carry him everywhere.
The paintbrush furthest from the camera is the paintbrush Van Gogh came with. Not bad, but very obviously plastic. The paintbrush next to that is the one I made. I used a toothpick, and shaved it down smaller using an emery board. I then used copper tape that I got at a garage sale and some bristles from one of those cheapo paintbrushes that are plastic and come with watercolor sets. I used a magic marker to darken the wood. Then I snipped the bristles to make them even, and tada! A tiny, functional paintbrush.