Here's a really cool video of what happens when you illuminate a drop of plant water with a high-powered laser in a dark room. The creator of this amazing video apparently saw a picture of a mosquito being struck by a laser pointer, and this is what they answered with.
One suggestion that somebody made was to take two different lasers, say, one red and one green, and shine them on a drop of water with the same setup as this one (only with a slight distance between the two). If you wore those red/green differently colored glasses that they used to give out, would you be able to see the images in 3-D? Somebody with lasers needs to try this right now.
Either way, this is the kind of hands-on experiment that could be used in any number of school classrooms. Something like this might have made studying electromagnetism in college a bit more bearable.