In my country, The New Year's Eve is called Tet holiday. I usually watch Tao Quan[ is the famous show for Happy new year in Vietnam], eat every foods and stay awake!
In korea, we celebrate the new year's eve with families. My family eats special dinner and we have a party until midnight. we count from 10 to 0 and shout "happy new year!" I make a wish for the new year.
In Sri Lanka, our festival is the new year on April 13 and 14th day. The festival is Vesak and Poya day. Poya day is on Saturday and Friday. And Vesak day is on the 13 and 14th of April. We swing on swings, we pray for god, we wake up at the midnight, and play drums. (Example for drum in Sinhala) Rambutan. And we also make Vesak lanterns. We make Sinhala food too.