I feel ya! I love to cut up onions, mushrooms, zucchini, and green peppers. Drizzle them with olive oil and stick them on the grill either on skewers (spelling?) or in a grill basket, top with a little cilantro. Yum! Another idea is to make guacamole. Mashed avocados, some salt, cilantro, minced red onion, and a tomato. Eat it with chips, on tacos, even on baked potatoes! Add a little lime juice to keep it from turning brown if you don't eat it all in one sitting.
My last idea is something I have started doing with my picky husband and 2 year old. I have started hiding veggies in almost any and everything I make. When you brown hamburger, throw in a handful of chopped onions, it adds flavor and there is a veggie in your meal. I have also started keeping yellow squash on hand and I will either chop it up very small or cut them Julianne (long, thing strips) and saute them in everything! Hamburger, scrambled eggs, you name it! From there I branched out and started adding chopped mushrooms, carrots, etc. Cook them or saute them first in just a little oil and throw them in pretty much anything you cook. It adds filling and you get a good helping of veggies without realizing it.
Oh, and one more thing that is SUPER easy! Throw a handful of frozen corn into your taco meat while it is cooking. I have also started doing this in spaghetti sauce (sometimes I add cooked carrots to spaghetti sauce too). As for spices, pretty much the only spices I cook with are garlic powder, onion powder, and creole seasoning. Those are my staples and I use them everyday! Hope that helps!