Emoji Builder is a fun little site for making your own emojis. To design your own emoji on Emoji Builder you simply pick a base face then add on eyes, mouth, and accessories from menus on the site. When you're done designing your emoji you can download it as a PNG. The site doesn't require any kind of registration.
Applications for Education
I have to admit that it took a long time for me to see the potential uses of emojis in a classroom for anything more than just decoration or distraction. Then in August Tony Vincent published a vocabulary game that uses emojis and I finally saw a clever way to use emojis in a classroom. Emoji Builder could be used to have students create emojis to represent themselves, their emotions, or, as Tony suggested, vocabulary words.
H/T to Lifehacker.