Let's do a hike to Lake Annette, have a picnic and go for a dip. We will bring our 8 month old - will be a leisurely pace and trip. It is 7.5 miles RT, 1,400 ft elevation gain. http://www.wta.org/go-hiking/hikes/annette-lake
Driving directions: From Seattle drive east on I-90 to exit 47 (Asahel Curtis/Denny Creek). Turn right from the off-ramp and continue 0.25 mile, then turn left on Forest Road 5590. You'll find the parking area in 0.3 mile.