Both states are so beautiful and have so much to see and do. Too bad you only have a week.
As a quilter, you should definitely go to Fabric Depot in Portland and to Sisters in Oregon.
The mountains (volcanoes), lakes, rivers and waterfalls are all beautiful in both states.
Gardens: Wooden Shoe in Woodburn, Or might still be beautiful with tulips. That's not far from Portland. Oregon Garden in Silverton is wonderful. The gardens previously mentioned in Portland - rose garden, Japanese Garden and Chinese Garden are all special.
Oregon's capitol building is worth a visit. There is a historic old mansion not far from the capitol that has recently restored their gardens. Salem's quilt shop is nice - Greenbaum's.
Most people really enjoy the casinos here in Oregon and Washington. The two or three I have visited do have good food even if you aren't into gambling and/or being drenched in cigarette smoke.
I am a native Oregonian, and we are very proud of our state. Once you are here, most people will be glad to advise you on places to see and help with directions.
I hope you enjoy your visit.
beckydahlias