We live relatively close to the Ice Rink where the Washington Capitals practice, which means a number of them live very close. When they were in fourth or fifth grade one of my son’s friends - a huge hockey fan - asked his parents to take him to as many players houses for Halloween as possible, and he took a minivan full of his buddies. So my S22, not me, has “met” I think 8-10 former Caps players. (The majority of whom gave out full size candy bars for halloween.)
The kid’s birthday was right around then, so the parents basically morphed this into his birthday party too. It was a school night, and I’m sure all the boys were just dead at school the next day, but for years my S22 talked about this as The Best Night. I gather the parents were cranking music in the van, there was pizza before the outing, they added extra stops at particularly well decorated or well known houses in the area, and they had some family friends dress up to “scare” the kids. The Caps players were a highlight, but it was all told an awesome experience.