Most cat owners will voluntarily play with their cat at all times since playing with a cat is often preferable than doing something else like washing the dishes or visiting relatives. So if you want to play with cats in the name of science, you can become part of a scientific study.
The study is open to anyone 18 or older, anywhere around the world. The study is also entirely online, so you just have to record a short video of you and your cat playing and submit it online by June 30, 2019.