I enjoy shooting film with a good old-fashioned plastic drugstore camera. A few years ago, Walgreens had an amazing deal. For something like $29 you could buy a "lifetime" camera - a plastic camera that came pre-loaded with Walgreens' own brand of ISO 400 film. Each time you shot a roll and brought it to Walgreens to be developed, they would load a new roll into it. I figured out a few hacks - I bought two cameras so I could get more free film, I figured out how to unload the film still unexposed so I could use it in my other cameras, and I hacked the plastic cameras themselves for light leaks and double-exposures. It came with a wrist strap, so sometimes the camera would fire accidentally. This is what I ended up with over the years - a series of "mistakes" that I've actually grown to love.
I adore experimenting with film and seeing what the results are. Often they aren't what I expect, especially when I manipulate both the film and the camera a whole bunch, but some of my "mistakes" are actually a few of my favorites. While Walgreens no longer sells this camera, you can buy similar reusable plastic cameras on eBay or you can try experimenting with disposable cameras. If you send a roll of film to be developed, make sure you let the technician know that they shouldn't be expecting a roll of perfect images and that they should scan every frame anyway!