I originally posted this project on Instructables for their Lazy Life contest (I won!) and wanted to also post the instructions here: however, there was a lot of amazingly creative and productive discussion in the comments over on Instructables, so be sure to check out the notes from other makers who tackled this blanket and found some other fillers/ideas. See the Instructable -->
Targeted advertising has me pegged--I was recently scrolling through facebook when an ad for a "relaxing gravity blanket," claiming to be "like Advil PM for your whole body," grabbed my attention. The blanket, weighing in at 15, 20, or 25 pounds, promises more restful sleep, to ease stress and anxiety, and help your mind and body relax...all by laying under the heavy blanket.
Weighted blankets have long been used therapeutically for people with sensory sensitivity or restless leg syndrome, as well as to increase focus (particularly in classroom settings). Newer studies are finding that these heavy blankets increase serotonin and melatonin levels while also lowering cortisol levels. Your mood improves, and because the weight minimizes movement during sleep, it helps your body stay in a deeper sleep for longer.
I have several family members who struggle with sleep and/or anxiety, so weighted blankets sounded like an amazing solution. I was sold--but yikes! This blanket carries a price tag of nearly $300. I set out to make my own with a budget of $50, using plastic pellets for the weight.