This is one of our favorite day trips and we take our friends here when they come to visit us up there.
Take a ride towards Highlands and go see
Dry Falls, its always a family pleaser. Then continue into downtown Highlands and go have lunch and walk around and look at all the cool shops.
If you want to make a day out of it continue over to
Whiteside Mountain and do the 1 hour hike to the top. The view is worth the drive and the hike. Plus the road to both places will make you cry.
I also know of a semi-secret water fall you can swim in but its about a 2 hour drive from you and 40 minute hike into the forest on the Mountain to Sea trail.