Bob always talks about using Odorless Paint Thinner, so you’ll need some.
To clean your brushes they make a nice cleaning bucket with a screen in the bottom. https://www.dickblick.com/products/bob-ross-brush-cleaning-bucket-screen/
And since you probably won’t be “beating the devil” out of your brushes on your easel, like Bob did on the show, there is a Beater Rack that fits in a trash bucket. It works really well. https://www.dickblick.com/items/bob-ross-beater-rack-5-14-x-5-34-x-10-34/