I just purchased the ecoTools 5 piece makeup brush set from Target. You can view it here :
I have seen them available in Rite Aid as well. The brushes have bamboo handles, and they come in a earth-friendly pouch.
They are by far, the BEST makeup brushes I have ever owned. They are so soft, and they apply makeup really well. The concealer brush is my favorite. It blends the concealer much better than a sponge applicator or your fingertips. I never even used a concealer brush before this set, and now I can't imagine ever being without one!
The ecoTools brushes are made with synthetic fibers. No worries about animal hair here!!