Boucle can be made out of a lot of different things, but I would say if you're not used to working with it try something acrylic, like Bernat soft boucle yarn. As an acrylic, it can be machine washed and is very durable.
cold sweat - the physical condition of concurrent perspiration and chill; associated with fear. fear, fearfulness, fright - an emotion experienced in anticipation of some specific pain or danger (usually accompanied by a desire to flee or fight)
Nausea and cold sweat experienced together can be caused by many different conditions. Some of the most common causes of cold sweat and nausea are low blood sugar, menopause, nightmares, fear, anxiety and migraines. Migraines are chronic types of headaches experienced by some people, usually on a regular basis.