First off...CONGRATS!!!! Make sure you start him off early and get him smokin' ASAP! (not that kind of course
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Second, try a foil pack. Not too unique but still awesome. Just take a potato and cube it and then with some carrots, green beans, steak chunks, or whatever other veggie or meat you want, throw it all in a piece of foil with a half a stick of butter and let it steam the veggies over the grill. If you added steak chunks just make sure those are done to your liking before taking em off.
Not too unique but always a pleaser. Again, Congrats on the bouncing baby boy!