I've been wanting to try out oil pastels for awhile now. They are a new medium for me, so I thought it would be an interesting challenge, and I really like what you can do with them. They are also a good way to make art with a lot of color without breaking out a paint set (which tends to be a lot more effort and mess). For my first study I tried out a Monet.
(note these are not the oil pastels I used, but I bought a similarly cheap set to start with)