I'd carry around a mini bottle of sanitizing gel too. And don't share pens. I notice every time I've been holed up at home working, and everyone else has been out and around other people, they're getting colds and I'm not. Then I'll go shopping, have to use a store pen, and BAM, I get cold symptoms a couple days later.

Of course I never do either of those two things because I don't think about it until after the fact.