Paper towels, toilet paper, hand sanitizer (a distillery near our house sells it in bulk). A run to an international foods store to pick up the items I use that I can't get at our usual markets. Already have been restocking the pantry with canned meat and some other staples. DW makes our laundry detergent so maybe make sure we have enough raw materials for that.
Which reminds me that I probably should get another box of dishwasher detergent because I'm particular about the one I like. Actually, aside from stocking items which will likely run short if things get notably worse (like hand sanitizer), a lot of our stocking up is so that we have the items we want on hand. We live three blocks from a decent-sized supermarket and a short drive to several more and some pharmacies. Short of a blizzard or an ice storm, it's not onerous to get what we need. But getting what we want can be a bigger deal, so why not address the non-perishable wants now, while it's easier?