The Star-filled Envelop is described as a miniature planetarium and star gazing experience, inside an envelope. Simple cut them open and look inside for an astrologically correct view of the night sky. The manufacturer notes that gazing up at a starry sky in the comfort of your own home is perfect after a hard day’s work. Sold in a set of 5, each with a different view. For a similar effect, you might try poking some holes in an envelope of your own.