1. Pinterest. You can find my boards here. I use Pinterest mostly for art inspiration. When I'm stuck or uninspired, I go to Pinterest and BAM! I have lots of ideas in minutes.
2. Neon oil pastels. Inexpensive and so fun to play with!
3. Catalyst Brushes by Princeton. They have a great spring and are inexpensive. Love 'em. I bought my first one in January when I was at Whim So Doodle in St. Pete, FL. Now I have quite an assortment.
4. Stabilo Woody Pencils. They're like my favorite Stabilo All pencil, but they're fatter (they're made for little kids, I think). They write & color well on paint (yay), are water soluble, and have lots of fun colors.