If you're going to be at the Val Air Ballroom, you're pretty close to Valley Junction, and there are two quilt shops there. I think one is Quit Block and the other is Quit Junction. They're within a couple of blocks of each other.
As far as hotels, I'm not really familiar with West Des Moines, but there are a couple in the downtown area, and it's a fairly easy drive to the Val Air. We've stayed at the Renaissance and the Marriott, and both were fine. I understand the Suites of 800 Locust are really nice, but they're a little more expensive I think.
I don't know how long you're going to be there, but there's also a fantastic restaurant downtown called Splash if you like seafood.