We used to keep stick insects. They like privet so be sure to locate your nearest hedge!
They do breed like crazy! If you don't want to end up with hundreds you need to collect the eggs and freeze them before disposing of them or they will hatch out and you will be over run with them. They are really interesting to watch though. Pets shops don't really want that many as there is a limited market so only hatch what you want to keep and remember each hatchling will be breeding in a few months!
They do eat a lot and we found keeping the privet twigs in a jar of wet sand kept them fresh longest. They also poo a lot and need cleaned frequently
They are easy to handle though if a little tickley!
What type do you have. We had the Indian stick insects which were green with red knees when mature.
I hope you enjoy having them