Jack has a playnest, the round Galt one, but he is growing out of it now as his legs are getting too long & he keeps dangling himself upside down over the edge of the ring
That one looks a bit bigger - I think you would probably be able to sit him up in it when he is able & put other toys around him too to keep him more interested, maybe if he feels tired whilst playing then, he will just fall asleep - Jack did this the 1st time he went in the nest, but it was the only time
https://i287.photobucket.com/albums/ll127/bev309/30082008176-1.jpg