Sounds like a good time for a mixed fruit, vegetable grill!
Zucchini, potatoes, leeks, peaches, pineapple, potatoes, asparagus, carrots, etc.
Get the grill fairly hot.. brush the veggies with olive oil(if allowed, if not regular oil).
Place on the grill and cook. Start the carrots and potatoes before everything else they take the longest to cook. While cooking lightly season with salt, pepper.