Cat tree out of cable spools

I admit that I'm a crazy cat person. And it even rubbed off on my mother - there was some renovation going on at her workplace and when she saw some empty cable spools lying around, she immediately thought that we could make a cat tree out of them!

I actually had a store-bought cat tree which my cats loved. It cost about 200€. It lasted for about two years - then it got very wobbly, the fabric started ripping and the wooden parts were breaking.
Even after I tried to fix it, it looked like this:

Anyway... I took it apart and thought I could use some parts of it (like the rope) to make a new cat tree out of those cable spools. And then... I waited 7 months for inspiration :D
It took a while but finally it was ready:

Although cats like it (especially the long scratching part), I think it's not worth the effort. Doesn't look very nice and it was also very very wobbly so I had to screw it to the wall - which means I can't move it around.
I'll just save up money and buy a normal one when this one breaks.