Choose all your favourite veggies. I use mushrooms, green zuchini, yellow zuchini squash, red, yellow, orange & green sweet peppers, grape or cherry tomatoes, sweet onion etc etc. Cut them, with the exception of the mushrooms which you want to leave whole, into bite size pieces. (but not too small-you want them the be big enough that they won't break off the skewer. Also, if you like tofu, cut a block up into large cubes and mix in with the veggies.
I marinate the veggies in a peanut satay sauce (I use a store bought marinade) a few tablespoons of vegetable oil and salt & pepper to taste. Toss with the veggies and tofu let them sit in a covered bowl in the fridge for about an hour. I soak the bamboo skewers in water prior to arranging the veggies on them in whichever order is most appealing to the eye. Lay them on a cookie sheet and brush with the marinade before putting on the BBQ. They don't take long on the grill. Watch for the edges getting charred.... there is nothing worse then blackened veggies! Serve with rice.