This is by no means an exhaustive list of the adventures available to you. Sonoma County is your oyster! (and, I guess, Napa is too...if you're into that)
WINE @ Littorai
788 Gold Ridge Road, Sebastopol, CA 95472, (707) 823-9586
Delicious biodynamic winery with tours and tastings by appointment.
WINE @ Flowers Vineyards & Winery
4035 Westside Road, Healdsburg, CA 95448, (707) 723-4800
WINE @ Scribe Winery
2100 Denmark Street, Sonoma, CA 95476, (707) 939-1858
FOOD: CLAM CHOWDER @ Spud Point Crab Company
1910 Westshore Road, Bodega Bay, CA 94923, (707) 875-9472
CEDAR BATHS @ Osmosis Day Spa Sanctuary
209 Bohemian Highway, Freestone, CA 95472, (707) 823-8231
REDWOOD ZIPLINING @ Sonoma Zipline Adventures
6250 Bohemian Highway, Occidental, CA 95465, (888) 494-7868
HEALDSBURG: food, wine, boutiques!!
Healdsburg, CA 95448
KAYAKING & SEALS @ Watertreks in Jenner
10438 California 1, Jenner, CA 95450, (707) 865-2249
Jenner is where the Russian River meets the Pacific, and there is a colony of harbor seals you can see either by taking a kayak tour or just heading for Goat Rock Beach!