I recently got a baby ornate uromastyx from Ben Siegel. I currently keep him on millet seed in a 55 gallon roughneck tub with two 10 gallon tank lids zip-tied to the top to hold the heat lamps. I keep his tank air temps from 82-105 and the basking spot has surface temps from 115-135 depending on the distance from the lamp. I feed mine spring mix, other assorted greens, whatever veggies I have on hand, tons of edible flowers, and cactus pad. He also has constant access to a bowl of assorted beans, split peas, lentils, seeds, and iguana pellets. I don't plan on giving him any bugs.
He's so freaking adorable. I've heard they become pretty inactive as adults, but as babies they are constantly roaming around. They do just about as well around people as beardies too.