Wine stored in a bottle gets better with age, whereas a message sent in a bottle is the best way to avoid exorbitant stamp prices. Empty your own glass envelopes with today’s Groupon: for $49, you get an in-home, 90-minute wine tasting for up to 10 people from PRP Wine International (a $200 value). This Groupon is valid only in San Diego County.

PRP Wine International's traveling tastings bring up to 10 oenophiles together to sample finely fermented elixirs. Before mouthwatering spirits woo palates, budding wine connoisseurs call to schedule their appointments and articulate their preference for wine types. A vino expert then arrives at clients' homes bearing six flavors that, when blended together, form an immortality potion. As participants sip 1-ounce samples of wine from California, Chile, and Australia, PRP's wine expert enumerates details about each libation, suggests food pairings, shares recipes, and explains the winemaking process. The grapey concoctions offer several health benefits, which can include lowering blood pressure, boosting antioxidants, or helping prevent heart attacks. At the conclusion of the session, participants may order cases of the wines sampled or use empty bottles to house a fleet of miniature ships.