Maybe these photos might encourage you to visit the Hollywood Farmers Market. Besides it being less crazy crowded and easier to find parking I think then the Portland Farmers Market at PSU, they also have one unique offering: Ippai PDX. This little pop-up is a regular stop for me. I love their variations of onigiri.
Pine Mountain + Deeproots bacon green bean onigiri
Tuna Salad with Corn Onigiri
If you want more than a snack, try their rice bowls- either hot (with warm curry on top) or cold (with various veggies). I added an egg for an extra dollar, so worth it.
You should definitely visit their website- besides popping up at the market, they also have pop-up dinners once in a while!
Have you ever had onigiri before?