Over the years I've taken care of cats, dogs, turkeys, chickens, ducks, pigeons, cockatiels, rabbits, horses & goats.
I would have loved to be able to take care of ferrets ... I go to the local pet store to get my ferret fix. I know my cats would get along with them, but adding ferrets to 4 cats & 1 Schnauzer would get me kicked out of the house & into the barn.
My neighbors takes care of the horses, cats & dogs. A few times, I've taken the dogs to their favorite kennel (never looks our way when dropped off) for longer periods to make it easier on the neighbors.