Filed under: seasonal , art , crafts My sister asked Santa for an advent calendar this year, and I plan to craft it myself using this easy how-to video . Thanks, Howcast! For handy instructions, read on!: How To Make an Advent Calendar on Howcast Step 1: Decorate a piece of cardboard or poster board large enough to hold 24 small boxes, envelopes, or pouches. Cut the cardboard into a holiday shape, such as a Christmas tree,...