I don't do a whole lot of prepping for this month-long challenge. With only one challenge a day (with the exception of October 1st), I can often combine the HYCCT card with the daily challenge. I did, however, purchase some A2+ clear envelopes that will hold both a card and the envelope. For previous years I had to use sandwich bags.
CAS 2013 Winter Design Team
CardMaker Blog Team January - July 2015