In our email age, old-fashioned written correspondence is a refreshing throwback, like drinking a soda made with real sugar or watching the president hand someone a sword. Write a thank-you note to the past with today's Groupon: for $18, you get $50 worth of stationery and more at Periwinkle Press.

Periwinkle specializes in personalization, helping customers express their individual style by offering an abundance of original designs and customized stationery. Upbeat paper products include note pads (around $29.50), calling cards (around $24 for set of 25), notebooks (around $18 each), personalized stickers (around $24), and more. Invitations (around $64) can be printed in multiple themes to invite friends to weddings, birthday parties, or baby showers, or used as a ruse to divert double dippers from your real party, which you paid Carson Daly to advertise. View a full selection of goods on Periwinkle's website before calling or stopping in to place an order. In-house personalization services usually take 2–3 days.