There's an ongoing project in Moscow to restore of Paradise Creek and bring back some native Palouse habitat. There's a stretch of riparian restoration at this nature park. Bring your dogs and the kids and enjoy the outdoors. Who knows, you might even spot some wildlife. I saw a Cooper's Hawk while placing this cache.
You're looking for a small container large enough for some small trade items. Inside, there's a nano container with a log all ready to go as a FTF gift.