What counts as a work search for weekly certification? (Pittsburgh)

The certification asks how many work-search activities I did and I do not know what qualifies. I am in Pittsburgh, in case local advice matters. Some days I only network by email or attend a job fair. What do you record?

Thanks for writing this out. I went through something close to it last year, and it settled down once I kept a simple log of every call and form.

Screenshots of the submitted application are handy backup when a posting disappears.