Can the new Cell Phone Magnifier unlock why Mint Mentos are better than Fruit Mentos for making soda explode? Check out this cheap option for those times when high-powered microscopes aren't necessary.
Arbor Scientific has a marvelous Cell Phone Magnifier that can easily be attached to a cell phone camera and turn it into a microscope.
You can use it anywhere you want, any time you want; for example you can investigate something on your nature walks that would be interesting microscopically such as an insect or plant. But I have found a lot of use for it in my lab when I view or photograph something microscopic. In this article I will provide some examples of interesting objects to view and discuss some details of the physics of the lens.