Another cool thing to do with milk is this.
Heat milk so that the cream and water seperated, but NOT so the milk BOILS. Then filter the the cream out with coffee filters. Take the cream of the milk and put it in a beaker then add some distilled water (or bottled would work) till the cream was pasty, and then add some baking soda to the cream. This is to make the solution more basic/neutral, I think (I did this in Physical Science freshman and my teacher had us do this). Take that milk cream (glue now) that should now be "pasty" and use it to glue lots of things together or make them shiny.
As I side note I use this glue to make coins and other things nice and shiny. I also imagine that it protects the coins from tarnishing.