First I made the insides. No tutorial here because that part was pretty easy. I used some cheap muslin I had laying around and cut it into a 4" by 16" rectangle. Fold in half and sew up, leaving just enough room to stick a funnel in. That's where you'll pour in the rice. (I've seen people use beans too, but I was a little leery of the smell it might give off when heating it in the microwave.)
Anyhoo...moving on! Cut your fabric in a 4.5" by 18" rectangle. Fold in half with right sides together and pin the top and bottom.
Pin it, then sew a line all the way around the top of the bag. I sewed mine just below the velcro. It's a little fidgety under the machine and you have to be careful not to sew the two layers together. Er, not that I did that...more than once.
Slide the rice bag in and you're just about done.
It says something like "place in the microwave for 2 - 3 minutes, then use on sore muscles or to relieve tension". I also put a disclaimer saying to spot clean and lay flat to dry. I'm not so confident in my mad sewing skillz yet and don't want anyones gift falling apart in the washer.
There you go - four little teacher gifts made from fabric and supplies already in house. Now who's joining me in the no-crap Valentine's Day pledge?