Though not all-inclusive, here are a couple things I did for illustration classes. More on the way.
First one: here's the "final version" of that cover.
2nd one: An illustration for a hypothetical card game about superstitions. This one was: If you leave a house through a different door than the one you came in through, it's bad luck.
3rd and 4th ones: A couple of spot illustrations based on different types of "annoying facebook users". It was an exercise in how quickly we could work: they had to be read, concepted, and done before the end of class.
3rd one is "the vowel lover"
4th one is "the verbal acrobat"