October 20, 2008 11:34 PM Subscribe
What kind of filler should I use in the home-made microwaveable heat packs I'm making for holiday presents this year?
posted by np312 to home & garden (17 answers total) 7 users marked this as a favorite
I've been browsing sites like Craftster for hours, but can't get a straight answer on what to put inside my heat/cold packs (which will be microwaved 2-3 mins, within a cotton or flannel covering.)
I want the filler to retain heat for a long time, which flax seed and cherry pits are good for, but those fillers are expensive. Plus, cherry pits are poisonous to animals who might bite into them, and flax seed apparently can explode in the microwave. Not good.
Rice is what a lot of people seem to use, but many people complain that it doesn't stay hot as long as flaxseed/cherry pits, and that the rice starts to smell funky after a while. Same complaint with corn.
Dried lentils, millet or bird seed all sound like good ideas to me (cheap, easy to find, good texture) but does anyone know if these ingredients will hold heat for a long time? Or if they'll smell funky?
Buckwheat hulls are also intriguing, but I'm worried that their sharp texture wouldn't feel good through flannel.
Any advice, personal experiences, on which filler beats all?