Our favorite spot for donuts! Mia used to drive to Oregon when she was in Washington just to grab a dozen to bring back for her folks. The lines here are also not crazy like they are in Portland!
Our kids' FAVORITE place to go! There are so many hands-on play areas for them and admission is very inexpensive.
If you don't mind driving a ways south, this is a great place to go to experience a new kind of animal enclosure. You drive through the enclosure yourself as the animals approach you!
An hour and a half west from Eugene is the Oregon Coast Aquarium! There's a park for kids to get some energy out at and the exhibits are wonderful!