Miner's Den Last Chance Sale Foldover Mailer. Every year Miner's Den has a special Christmas key event, and I use the imagery I create for the Key Mailer across the supplemental mailings throughout the rest of the season. This piece humorously reminds customers that they missed out on the key event, but there is still time for the second chance sale. I created the background image, edited and clipped the jewelry photos, and hunted down stock images of surprised christmas shoppers.