Other possible "Of the Days"

Holidays can be specified:
Christmas chips
New Year's chips

or Molds
Large key, small key, plain, Horshu, Nevada, Plain, Roulette chips, triangle, dots, B et G, 4 suits, 6 suits, 8 suits, diecar, diesuits, arodie, etc.

or by Casino Name
Have one or two casinos for each day.