Besides what others mentioned.
Mt. Rainier is a gorgeous area to drive around.
If you are into movies, the High School (Stadium High School) that was featured prominently in "Ten Thing I Hate About You" is in Tacoma, practically on Puget Sound. And Mt. Rainier is visible from there. Quite an interesting building.
And my absolute favorite in the area, and possibly one of the most gorgeous sights I have seen anywhere, if you have time, drive up to Port Angeles and drive up to Hurricane Ridge in Olympic National Park. Here's a picture of the visitor center.
And here's our lunchroom of the day, Picnic Area B, maybe a mile west of the visitor center.