I have a lot of trouble with shoulder/neck pain, which gives me pretty frequent headaches. I did used to have a little shop-bought wheat pack thing, but it got fried in the old microwave. So I made myself a newer, better one!
Bascially, it's stuffed with jasmine rice and a bunch of dried lavender. It seems to hold the heat fairly well, and smells pretty at the same time. I wear it almost constantly.
Made by a slightly modified
this pattern.
Only took me probably 30 minutes too.