When I was a kid, it’d have to be Memorial Day. All the extended family would convene at the old family cemetery to decorate the graves. That isn’t the weird thing… the weird thing was we treated it as a family reunion and picnicked together among the head stones.
My siblings and I are all in our 30s and we still get visits from the Easter Bunny. We go through our baskets in front of our mom and talk about how much we enjoy our gifts from ‘the bunny’. I wasn’t able to be with my family this year so my Easter basket shower up in a FedEx box. Chocolate is chocolate, I’ve got no problems with this tradition.
My MIL gives us all presents from “Santa”. I’m pushing 50. She thought it was hilarious when I started doing it back to her (“why is Santa’s handwriting different on this tag??”)
I don’t know what your families nationality is, but this is very common in some countries (not for memorial day, specifically, but picnicking in the cemetery on a holiday).
When I first met my wife’s family, they had a tradition of playing cards (Canasta) anytime the family would gather. My wife however didn’t know how to play. They taught me and it was actually really fun hanging out and bullshitting. Like guys playing poker. We still do it all the time after nearly 20 years of being married.
We have a family tradition of watching giant monster (Godzilla, etc.) movies on New Years Eve.
in the seventies, we all swam naked together