These are a super good little life cycle observation bugs.
There small and not extremely good looking like the stag beetle but there so easy to breed and look after that they would be awesome for kids. I really like mine, there gonna do some bone cleaning for me once I have enough.
Anyways if you want something that's fun to watch go about its day, these hyper little fellas are great.
Oh! And for cocopeat, I had to really hunt for the stuff in burnings, and then I found out its listed under its brand name. So if you get confused like I did send them an email there really helpful and got back to me litterally while I was still in bunnings.