Some people let their gliders hunt crickets down in the bathtub with the stopper down to prevent escapees. I haven't tried that yet but mine love crickets, I just hand them to them and they crunch away. I've heard crickets are higher in nutrients and lower in fat than mealworms, and that dubia roaches are even better. I don't have the stomach to feed dubias quite yet, but they're supposedly easy to raise, less loud and smelly than crickets, and both more nutritious amd less likely to cause allergies than mealworms. (If you ever decide to start raising mealworms, make sure to wear a dustmask and gloves when handling them or cleaning their enclosure to avoid the frass. Even if you're not initially allergic, repeated exposure heightens the chances of developing an allergic response to them.)