The tray in this photo is actually made out of aluminum foil, but it's done so well that you don't even notice. Start off by painting your tray. You can paint it similarly to the one in this photo, or you could go with your own design. Next, cut out your bunny using some cardboard, and give it some color or leave it brown, depending on what colors you're going with.
You can also take some fake flowers and carrots and run them along the bottom of the pan or along the top. Use Scrabble pieces to finish everything off by spelling a festive word.