We love to BBQ!
How about some kabobs? Sometimes I marinate the meat and veggies, but if I don't have time, I just brush with a marinade/glaze while grilling. Soak wooden skewers in water for 30 minutes, then thread and grill. I put the meat and veggies on separate skewers so the veggies don't overcook. I usually serve with rice and grilled fruit.
I like chicken, steak, smoked sausage and especially tenderloin. You can cube the meat or slice it in strips. For marinades and glazes, I like soy sauce/honey/minced garlic, Italian dressing, vinaigrettes (raspberry is a favorite), BBQ sauce, orange or pineapple marmalade/brown sugar (heat marmalade and stir until sugar dissolves), honey/brown sugar/lemon juice, etc.
I love just about any veggie. Asparagus is a favorite, too. Just brush very lightly with olive oil and sprinkle with Kosher salt. I rub butter on onion slices, sprinkle lightly with salt/pepper/garlic powder and grill them. Fruit is great on the grill. Pineapple slices, peach halves, apple slices, bananas, etc. You can brush them with butter and brown sugar for extra sweetness when the sugar caramelizes.
Before I got a smoker, I used my gas grill to smoke hams, whole chickens or pieces, pork chops, boston butt (I usually halve these so they will cook faster). It's easy to do if the burners on your grill run front to back instead of side to side. Put the meat on one side with the burners below it off, and put wood chips in a foil packet with holes (or a small smoker box) on the other side with the burners under it on. Close the lid and let it smoke. If you have a wood or charcoal grill, just put the fire on one side with the wood chips, the meat on the other side and close the lid.
I pat the meat dry then rub all over with a light coating of oil (garlic flavored olive oil is a favorite) then sprinkle with seasonings. I stuff pats of butter under the skin of chicken and turkey. You can also stuff apples, celery, onions, etc., in the cavity. Hickory chips work great with everything, but for chicken, I prefer apple or pecan chips.