Mosi destroys most cat toys in minutes. I really don't know what they expect cats to do with cat toys tbh - not use their teeth or claws it seems! I also really notice the difference between cheap and expensive scratch posts. The big ceiling high post I got from zooplus is in a worst state than the expensive one I bought 10 years ago when I got Jaffa (the sisal posts at least).
re balls hanging from activity centres etc. - I agree - I always cut them off. When I got a post for Jaffa and Magpie years ago it had a ball hanging from a piece of string attached to the top platform. Shortly after I got it Magpie was playing with it when it got wrapped around his paw and he was left hanging from it and screaming. As I was in the room at the time I was able to rush over to him and unwrap it straight away but I dread to think what might have happened if I hadn't been there. I now only leave things hanging if the string is very thick and short so unlikely to get wrapped around any paws (or, heaven forbid, necks).