There's nothing you need to buy to gratitudinate. All you have to do is listen once to this 10 minute podcast and you will appreciate the idea and can then decide whether you find it in your interest to use this simple mental exercise. In this 20th episode, I offer the global gift economy Buy Nothing free use of the word "gratitudinate" to convey to their members an opportunity to act for their own benefit and  in the spirit of the community. The action involved is marinating in gratitude by thinking and talking and writing about the good in your life in order to feel good and do good by giving of yourself. It seems like a fit for Buy Nothing.