Mamba and her kittens are outgrowing the “pop-up” they’ve been living in. It’s a very nice space for them to be confined in, but we’ve been letting them out to explore, and they’re ready to be out all the time.
Part of the reason for confinement is so that we can get Mamba herself used to people. She is not super trusting, and she needed to have people close so we could convey that we were pretty safe to be around her kittens. Now that I can (usually) pet her, she can be out of confinement.
The pop-up, which some of the kittens learned to climb and treat like a hammock. 
Mamba and her kittens, with a whole room to explore.