Here are two of the best places to get pet insects from (they are delivered to your door). For stick insects, go to Small-Life Supplies for stick insects and cages and they also supply butterflies for release into your garden. For tropical caterpillars go to Lepidoptera Breeders Association - Supporting Moth and Butterfly captive breeding programmes There is also a forum on the lba site for people who keep caterpillars, butterflies and moths as pets.