My brother-in-law doesn't mind baked treats, he really appreciates a plate of fruits and cheese. I found this idea on Pinterest and saved it for his birthday.
The main "cake" is a watermelon (nearly impossible to find during the winter). There are blueberries, sliced strawberries, and raspberries as the borders. The dots and letters are cut from cantaloupe using my fondant cutters. He loved it.
(I made a chocolate cake to serve along with it for us less healthy folk.)