We have: Furhaven Pet Cat Tree - Tiger... https://www.amazon.com/dp/B01KIHALT4?ref=ppx_pop_mob_ap_share
Catry, Large Activity Cat Tree... https://www.amazon.com/dp/B07YSXVPWY?ref=ppx_pop_mob_ap_share
This one comes with the added bonus of a place for a litter box in the bottom, or a good hiding spot.
Catry, Large Activity Cat Tree... https://www.amazon.com/dp/B07YSXVPWY?ref=ppx_pop_mob_ap_share
Only you can decide really, also you know your own kid, some are gentle always and understand instantly not to do this or that, others aren't, every kid is different.
That being said I got a kitten when my eldest was around 4 and she's a massive animal lover to the point she cries when she sees a dead bug and was always gentle with our kitty, I worked 9-5 5 days a week but I got similar to this, I had it next to the window (always shut) so she could play and then sit on it and look at the outside world, I got similar to this and this for her as well as toys we could use with her