I don’t have anything like that, wish I did.
It would be difficult having such things, if you couldn’t outright hide them away, like a closet or locked room. It maybe possible to disguise some of them, in plain sight though. Like for example, a changing table might be explained away, as a massage table. It wouldn’t work, if it was very AB looking to begin with though. And you couldn’t leave diapers stockpiled in it, when you have visitors. You could try and put a cover over it, and still explain it away as, a message table, as long as no one gets to snoopy, and peeks underneath. A high chair, might be a bit more trouble to explain. Unless, you can remove the tray, and explain it as, something like an observer’s chair, like you might see in a billiard room. You could say, you just liked the look of the chair, and got it cheap. If someone does question it, you can reply, it does make a good conversation piece, doesn’t it?
Now a crib, that would be real difficult. An honest to goodness, working adult size crib, could not be explained. But, if you had something that could make a regular bed, look like a crib. Like something that folds up, and can be stored under the bed, or a closet, that could work. The same would go for a playpen.