I would commemorate it with a song, but the only song that I know about Christopher Columbus is so incredibly filthy that I am risking my reputation slightly by even admitting that I know that the aforementioned song even exists, let alone has lyrics that I may or may not have some passing familiarity with.
So, there’s that.
PS: On the bright side: it’s a holiday where the kids have to go to school but the adults have a reasonable chance to avoid having to go to work.
PPS: I am exceptionally happy not to be an illiterate barley* farmer in Ireland, by the way. So there’s that, as well.
*Potatoes are a New World crop.