The first of May is a holiday in a lot of the world, whether honoring the "Green Root" (ancient pagan agricultural and fertility traditions) or "Red Root" (Labor Day, going back at least to the Haymarket Riots in Chicago in the 1880s).
In Hawaii, where I lived from age 6 to 10 1/2, May 1 is
Lei Day -- a celebration of all the various cultures of the Islands. The schools generally do pageants and performances.
When I was in second grade, I was nominated to be a princess in my elementary school's Court of Royalty of the Eight Islands. It didn't reflect any particular merit on my part; I suspect I was picked merely because at that age I had white-blond hair and would make a good contrast with my designated prince, a little boy of Portuguese heritage with black hair and a deep tan.
We were the Prince and Princess of Molokai (a/k/a "The Friendly Island"), so we wore green (a sarong for me, an aloha shirt and khakis for him) with garlands of shiny black kukui nuts. *
The Lei Day celebrations followed the standard school-cultural-day format: All 600-odd children, ages kindergarten to sixth grade, gathered out on the main lawn (in front of hundreds of camera-clicking relatives).
The royal court processed out, and then we were seated under a canopy. Each class performed a traditional Pacific dance or song (Hawaiian hula, poi-ball twirling, Maori titi torea [clicking and juggling sticks], Japanese lullaby, etc.).
Lastly, the oldest students did a Maypole dance to the
"Kamehameha Waltz." After that, a big potluck.
I still remember those festivities fondly, although that was back in the 1970s.
Do you do anything special for May Day?
* Colors and flowers of each island, as per Wikipedia:
Hawaiʻi: red, ʻōhiʻa lehua (Metrosideros polymorpha)
Maui: pink, lokelani (Rosa damascena)
Kahoʻolawe: gray or silver, hinahina (Heliotropium anomalum var. argentum)
Lānaʻi: orange, kaunaʻoa (Cuscuta sandwichiana)
Oʻahu: yellow or gold, ʻilima (Sida fallax)
Molokaʻi: green, kukui (Aleurites moluccanus)
Kauaʻi: purple, mokihana (Melicope anisata)
Niʻihau: white, pūpū o Niʻihau (Niʻihau shells)