I have made two different varieties - one for the sole of your slipper, to wear while sitting (it is a little uncomfortable to walk on the inserts and raw rice) and the other to lay on the top of your toes (which you can wear while walking around).
Additionally - similar inserts could be made to insert into your mittens. Just had another idea - the inserts could be slipped inside your boots too!
Step 1: Materials Needed
Raw rice or whole buckwheat seeds or buckwheat groats (do not us buckwheat hulls)