They’re called “compression sheets” or “sensory sheets,” and basically they’re designed to a person into their bed so they feel cozy and secure — hence calming them down, making it easier to sleep, etc.
Once I fully understood the connection between my mental health and creativity, it changed my life.
I’m not used to struggling with creative things. I felt a little like pouting. Despite having quite a lot of experience with hand-sewing, rug-hooking didn’t come easily for me.