You could pretend you're tourists and do all the local sights, maybe for the first time alone without out of towners?

Space needle, pioneer square, Pike place, whatever things are already your favorites to show other people. But focus on actually enjoying it first hand, if you never have.

You could go full cheesy mode and do the stuff tourists love, like flagship Starbucks and such, or enjoy being your own local tour guide and make use of your inside knowledge of hidden gems