Hey! I’m not really posting anymore, but I just came across this and I thought I could help. My pet hedgehog actually died last night 
after a long life (for a hedgehog). I think he made a decent enough pet. As with everything, it depends on what you are looking for I guess.
They are active mostly at night, waking up around sundown. They poop a LOT. I mean, a LOT. That’s by far the worst part of keeping them. Mine ate a diet of high quality cat food, supplemented with bugs from the petstore. They aren’t the friendliest animals, but they are pretty cutely grumpy. Mine was never mean, and he only bit once, during a bath (no blood). The babies are pretty affectionate, but then they will go through a process known as “quilling” where they get their adult quills. It’s kind of like hedgehog puberty, and most of them get pretty grumpy during this phase. Afterwards, they are a bit more stand-offish, and will frequently bond with only one person, which was my daughter in this case. He didn’t really like being handled by me, but he liked her company and would sit with her and stuff. She adored him, and they are incredibly cute. They have a ton of personality, in my opinion. Although the poop thing…
For a cage, you can make one out of like, storage cubes? Like this. Make a large rectangle, 2 feet by 4 feet. Yes, they need AT LEAST that much space. Then you can use something called coroplast to build the inner box that he will live in. PM me for plans, OR pm me where you live and I’ll mail you my stuff. I used polar fleece to make blankets that fit the bottom, instead of newspaper, with some smaller blankies to cuddle with. He also had a wheel we made from a cake cover lid and a skateboard wheel. He must have a wheel and the wheel MUST be solid, or he can break a toe. Again, you are welcome to mine, or I can give you plans to make one. They like to poop while they run also, so the wheel should be easy to clean. You’ll also need a food and water dish, some hidey tubes, a couple cat toys, and a toilet paper roll. For some reason they LOVE sticking their heads in a toilet paper roll and walking around like that. It’s hilarious.
After that, that’s basically it. I changed out his bedding every couple days (just run it through the wash) and cleaned out the whole thing (plus the wheel and everything) once a week or so with vinegar and water. He’ll need a bath once a week or so (the poop thing). Mine never needed vet care, and was healthy for almost 6 years, until he passed peacefully in his sleep last night. I can’t promise the same thing to you, but he was a good pet, and we all loved him. If you have any questions, I’ll check this again, or just pm me. I hope I could help. 
RIP Dr. Bolton Pricklepants.
(he wasn’t really a doctor, just an acupuncturist, but he always insisted on the title)
eta: I also wanted to say, rats are, by a HUGE margin, the best small pets to own. I can give you details on that as well, but I know there are more knowledgeable rat people on the board. Also, they will keep mice and other rats AWAY from your house, as they are territorial and their smell will act as a deterrent (rats will kill other rats or mice that come in their territory).