I know this isn’t what the OP is looking for…but the best themed 60 birthday I’ve ever been to was for a good friend. The theme was “Toys from the birthday girl’s childhood”. We all brought toys that she might have played with as a youngster…so much fun! Hula hoops, Barbie dolls, etc.
She got to open a ton of fun gifts.
They were all donated to a place here that collects things for children…and new toys are at a premium. Plus, this gals birthday was in December, and the party in November, so some were probably used for Christmas gifts for less fortunate families.