What are some other cool products for stress/anxiety?

Ky 8-15-17👼🏼 & 10-28-17👼🏼 Pregnant with my🌈💕
My sister is in college and has stress and anxiety. For part of her Christmas I wanted to get something for her to kind of relax her. I've thought of maybe a zen garden, or a tabletop waterfall for when she sleeps. I can't think of what other cool things there are for relaxation besides those things. Do any of you know any other neat things?