go to gasworks park, go to paseos (sandwich place), go for a ride or run on the burke gilman trail, go see the mariners or the sounders if they are playing, go to pike place market (if you feel like being touristy), go "ride the duck" and i will yell at you from my window, go to the emp if you aren't adverse to wasting money, go see some live music at tula's or jazz alley if you like jazz, go play pickup basketball at greenlake or university of washington, go on a seaplane tour from union bay...maybe, go to the top of the space needle if the emp hadn't quelled you desire to waste money, i dont know
The Bite of Seattle is running this weekend - good food, entertainment etc