my hobbies include rock collecting and making macaroni art. I like to be an amateur geologist. Sometimes people call it "rockhounding" 
You could totally make macaroni art dedicated to showcasing your rock collection!
Macaroni art
Macaroni art, sometimes referred to as macaroni crafts or pasta art, is artwork that is made of dry macaroni or other pasta. The works commonly consist of individual pieces of macaroni glued to a surface to produce a mosaic. However, works may take the form of sculptures.
This type of art is produced during arts and crafts classes at pre-school. Today, it has evolved to become an artform practiced by adults.
In popular culture.
Pasta art was used to advertise a Nancy
charging more, I'm never going to become a 'known artist.' I think that's nonsense. You either like the print or you don't, and that shouldn't have anything to do with the price. My goal is to make art -- at least my art -- available to common people. I don't give a damn about the art people; I want to get it into your mom's house and my mom's house.”
Contrary to the usual practice among printmakers, he refuses to