This seems very do-able as a DYI project.
kitty condo for the kids :)
I found 'Castle Cat Tree Tower- Cat Furniture' on Wish, check it out!
Great cat condos at reasonable prices.
cardboard box house for cats - Google Search
DIY kitty condo made from cardboard boxes; you could cover the boxes with wrapping paper to make them more aesthetically pleasing.
I really like the looks of this cool cat play tree!
cats on Pinterest | Cat Condo, Cat Tree and Cat Furniture
Cute Cat Condo WHOO WHOO
Now this is the cat condo our kitties need!!!!!!