These are our materials. You may also find a funnel useful, but it's not necessary.
1. Cut the fabric 9 x 22
2. Fold in half and sew 2 long sides together, right sides in
3. Turn right sides out and sew in 4 “channels”, 3 seams the long way
~Each trivet gets 1 pound of rice mixed with a couple of drops of scented oil. I guess you could use any scent you fancy, but she always used Apple Cinnamon. I suggest this sent, especially if you'll be gifting them during the holidays.
4. Fill each channel..my aunt used a large funnel, but if you’re just making a few you can make do with an empty toilet roll or something. Make sure you pack the rice tight enough so that you have about 2” left at the top for sewing it shut.
5. I folded the top twice, about ¼ inch, then fold again. Pin it shut and sew it shut. Be careful of your needle breaking on a piece of stray rice. My aunt used to wear protective glasses!I rolled it up and tied it with some gold ribbon-y stuff. Ya know, fancified it. I plan to make a little tag to attach too.
Another thing I remembered was my aunt stored them in ziplock bags before giving them out. Presumably this is to either A.) preserve the scent or 2.) keep the scent level to a minimum in your home if you're making a bunch. In either case, I did the same. Several will fit nicely into a gallon sized bag.