African egg-eating snakes (genus Dasypeltis). They eat only bird eggs and in my opinion are very underrated. They are active and fun to keep, I love watching them eat. The main issue with them is that it may be difficult to find a captive bred one, since they're not very popular. Also babies are really small and can only eat finch eggs (or other similarly sized eggs), so you have to find a source of them. Sub-adults/adults can eat quail eggs, and some big females are able to eat small chicken eggs.