Learn Something Every Day is a trivia fan's dream come true. There's a quirky fact published each day, with accompanying cute cartoon-style sketch, and you can scroll through to read earlier facts.
The facts might make interesting discussion starters, or be a good focus for further reading and research in a classroom situation. Students might even decide to use a fact as a challenge eg "The greatest height a chicken egg has been dropped without cracking is 700 feet." What inventions can kids create to carry an egg safely to the ground?
I love the art work too, which is a great example of using just a few lines to communicate an idea. Some of it might offend some people, so as ever, use caution. I think children would enjoy creating their own cartoon art to illustrate a fact of their choice. For the samples here, I used a quick program called Skitch, but you could also use Photoshop, or an online art editor. Kids might enjoy looking for some interesting facts at Science Kids.