In Corvallis, try the Play Factory (at the Toy Factory)!
442 Southwest 2nd Street
Corvallis, OR 97333-4446
A few bucks to get in, kids can play (warm, dry, safe & complete with bathrooms!), and get their hands stamped in case you want to come back after wandering down the street for some pizza (American Dream) or light lunch/pastries/coffee (New Morning Bakery).
Best of luck at the interview!