Red sky at night is a sailor’s delight, but red sky at morning means the ship's been steered inside a volcano. Discover further aquaformation with today’s Groupon: for $30, you get a standup paddleboard rental for two hours (a $50 value) with an introductory lesson and equipment overview (a $10 value) from Marsh Creek Watersports in Downingtown (a $60 total value).

Marsh Creek Watersports woos aquatic explorers with an expansive library of lake vehicles, offering rentals and lessons for kayakers, windsurfers, and standup paddle partisans. For two fresh-air-laden hours, upright adventurers can leisurely paddle the calm waters of the 535-acre Marsh Creek Lake surrounded by lush greenery and undomesticated wildlife. The scenic puddle teems with gilled swimmers such as catfish, sunfish, go fish, and largemouth bass waiting to be caught by fishermen or dealt to a group of kiddie card players. Standup paddleboards are available for rent every day from April through October. Post-paddle, visitors can sip on refreshments from an on-site peddler as they frolic through the surrounding 1,705 acres of Marsh Creek State Park, an expanse ripe with picnic areas, hiking trails, and wormholes to earth's outpost in Zeta Reticuli.