Scooby-Doo! Forever First Class Postage Stamps

A sheet of 12 showing Scooby-Doo watering a plant in a flowerpot - a small act standing in for the Doo Good campaign, run with generationOn, the youth arm of Points of Light, which pointed kids at environmental work, hunger and animal welfare. Scooby has been solving mysteries since 1969, with Fred, Daphne, Velma and Shaggy, across more than a dozen series plus films, comics and live action. Very few cartoon characters have stayed continuously in production that long.

The sheet of 12 rather than 20 is worth noting when you are working out how many to buy. Beyond that these go on children's birthday invitations, letters to grandchildren, classroom mail and care packages, and on the correspondence of adults who watched the show on Saturday mornings and are not embarrassed about it. The Doo Good tie-in dates the sheet; the dog does not, which is why these still move.