BiodieselNow has Powered by Biodiesel license plate frames available for $10:
"Our good friend PizzaMan (George) is producing a bunch of license plate frames to help you show off your support of biodiesel! George has made many plate frames in the past for TDIClub.com, and his work is top-notch. He's making special offer to BioDieselNow supporters - buy one (or two!) for $10 ($1.50 off his regular price), and he'll donate $2 per plate frame to BioDieselNow!"