Yes, yes, I know Darwin Day was Februrary 12th. Nevertheless, the Alliance for Science is sponsoring an essay contest in Darwin's honor and, if you're a high school student you can still celebrate by writing an essay.
And if you're a high school teacher, and your student wins, you win $$ for buying lab supplies.
Okay, I suppose it's only us geeky bloggers who consider writing an essay to be a kind of celebration.
If the sheer joy of celebrating Darwin Day by writing an essay, doesn't pique your interest, there are prizes.
Write an essay on the topic: "Why would you want your doctor to have studied evolution?" with 1000 words or less, and you could win:
First Place $300
Second Place $200
Third Place $150
Fourth place $100
You can find all the entry info on-line at: http://www.allianceforscience.org/essay