Probably the strangest one I found was "National Geographic Rock Tumbling Kits" which I guess got bought up for home schooling projects?
Anyways just curious what other unexpected items have become diffict to buy?
Yeast has been almost impossible to find. Lots more people are making their own bread.
Twill tape and elastic. This is a herringbone weave strip of fabric, you use it to tie pajama pants, cloth bags, things like that. People are using it for ties for homemade face covering.