When given to the neighbor we would put hang the basket on the door handle...knock or ring the door bell...and then run away so they wouldn't know who put it there. See this blog for a cute idea to do...HERE.
I also remember in Gym class - perhaps 1st-3rd grade - we learned how to dance the Maypole...then we would go outside [weather permitting] and actually dance the Maypole. It was fun to do something different for Gym and it made the day special. I don't believe the school does this anymore. I wonder why?
Do you remember doing anything for May Day?