The donkey. (Technically, it's a male donkey, called a "jackass," but that's a derogatory term so most people usually say "donkey.")
The bear
numbers!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Ag
Ne.
lightning bolt
All it really does is give you an avatar and some Neopoints. I've played on the site for almost a year, and only ever got the Symol event once.
there are many ranging from images to word like things
Symol Day 2005 Background
IBM
The Mountain Bluebird
one of yur petpets can go in and they might find a avatar.
H2O IS THE CHEMICAL SYMBOL FOR WATER