All The Tropes Wiki Project, Part XXIII

[Umbire]

for a couple real life examples of that sort of thing, there's 'Taco Tuesdays' or other weekly traditions. Local movie theatres in my area typically discount tickets a few dollars on Tuesdays, encouraging greater attendance those nights.  Likewise a nearby radio station (WRIF in Detroit) has "Twofer Tuesdays, where they play 2 songs by the same artist  in a row all day (another local station used to do 'Tripleshot Thursdays, 3 songs in a row, but discontinued it a few years back)

Yeah, "that but in video games" is the exact sort of thing I'm looking for. I should actually look and see if the Hold Item siblings from Pokemon Gold, Silver and Crystal lead me to an article.