Gleb,
I spent close to ten years as a hobbyist with Reptiles, Amphibians, Large Birds and other Exotics.
I personally have owned African Pigmy Hedgehogs and while they are not difficult to keep I would still suggest against them. If your looking along those lines a Ferret will be much more interactive, but also more of a potential pain in the ass IMO.
PM me if you have any questions about "unusual" pets and I can offer my opinion.
~TG