altho not at all the same thing, one year my 2nd ex and i collected ALL the credit card offers we rec'd throughout the entire year - including my pre-teen daughter.....AND another son i didn't know i had. then on New Year's Eve we sat around and opened each one and made the tally. i can't remember the exact numbers, but i know for the adults it was well into the hundreds of thousands, and the kids each had close to $100k.
i think that was like the only thing i ever did consistently for an entire year?? i really like the Good Things jar idea. if you used Bell jars and used colored paper/post its, it could also be quite decorative.