It's not always chips that come in the mail. I like the novelty items, too.

Today one box had a “Lucky Stone” from the Lucky Casino downtown Vegas (1963 to 1967) that I could rub for luck!

Also included was an old paper cup from the Four Queens,
a sealed pair of nylons that they used to give away as a prize,
a couple nice tokens
and a pristine napkin from the Boulder Club of downtown Vegas (1931 to 1960).