I'm pretty intense with the season, decorating in early October, lighting candles and carving pumpkins the week before, making spooky musical play lists, watching horror movies, eating too much candy, and actually doing some reflection/remembrance which is part of the original meaning of Samhain: to remember the dead, the past, be more spiritually connected, and observe the end of the harvest.
It's also a good time to cast simple candle spells that Western people would probably correlate more with New Years or Valentines. Traditionally European pagans considered this the new year (Samhain actually ends after sundown on November 1) and also cast love spells, I'm guessing this had to do with Beltane being more love-oriented, so if you cast the spell now it you marry in May? IDK.
I didn't remember it was world vegan day until this morning. I wore a vegan tee shirt and told my roommate and one of my classmates, I don't know if I'll do anything special.