I think that we all could learn from how cats are happy and content with the simplest things in life, like a bag or string.
As long as your outlook in life changes, you can be live a fulfilling life no matter the circunstances.
Strive for more and be greedy, but also be grateful of what you have now.
Cats are endless wells of knowledge and also loose fur, a lot of fur. Also scratches, they provide a lot of those too.