All assuming you’ll have a car:

• Take a ferry a drive a loop around the peninsula. A few of the many good places for a stop: Hurricane Ridge, Kalaloch, Port Townsend.
• If you’re here after April or so, do the cascade loop (https://www.cascadeloop.com/).

We have a handful of scenic byways, take your pick! https://stateofwatourism.com/scenic-byways/

If you’re here in April, consider visiting the arboretum for all kinds of beautifully flowering trees.

Also think about walking on to a ferry downtown, going to Bainbridge and walking into Winslow. Go have fish and chips at the Harbor Public House.