Playing catch on the field with some music, games and fireworks at midnight (cheap and cheerful)?
All of the above but with snacks and a bar (pay as you play)?
All of the above but include a sit down meal (A little more costly)?
All of the above but we need a band, dance floor and we want to get dressed up! (NYE comes once a year lets celebrate in style)?
No sorry I'm making other plans after the game.