Enjoyable and easy to assemble
I have 2 cats, one that looks at it and looks away, the other who goes crazy for it!
They're both under 2 years old and I really think it depends on what personality your cat has to whether they'll like it or not.
The one who ignores it is rather lazy and just likes to sleep. The one who loves it, loves any and all toys, she's very active so I knew this would be great to keep her busy for a bit!