Mechanicsville is essentially a suburb of Richmond, so there's plenty to do in and around the city. You don't say what your interests are, but you might choose from boutique shopping, a stroll through Lewis Ginter Botanical Garden, high culture at the Virginia Museum of Fine Arts, a day at the horse races, or a wine-tasting tour of the area vineyards (see http://www.hovawinetrail.com for more info). You should also check out http://www.richmond.com/restaurants-dining/ for some ideas about good places to eat.