See what you could do along these lines:
You’ll need to do a little fiddling… the promotion is not explained really well there. Here, you can “eavesdrop” on their idea as it develops. More discussion amongst their members on this Facebook group.
‘Course, you’d need to come up with a really good title for this promotion, which the Geeks (being geeks and all) haven’t done. What might your area call this?
Playing with a Full Deck of Cards, maybe?
And best wishes to TnT Thrift, whose thrift shop site I found this on!