Here's mine, and don't ask me how I built it, because I can't remember!
It works great, though. How about that nice green colored pine? I got the tin of stain out of the clearance bin at Home Depot.
The only problem with my design is that marauding animals can pull the drip pan out and lick it dry (after making a big mess, of course). I have to remember to remove it if it is replete with the likker.