I've been making my own butter lately and there are many reasons why you should do the same... you will know there are no dyes or additives in your butter, it tastes great and melts beautifully, with butter comes buttermilk, it's a good conversation starter. But perhaps the best reason to make your own is that it is very easy. You just need a couple of tools: heavy cream, a food processor, a bowl (it's easier to pour off the buttermilk if you use a bowl with a spout) and a nice firm spatula (the one I use is all one piece, which I find more sanitary than the rubber on wooden handle variety).
Once the kneading is done, I form the butter into cylinders, which makes it easy to store, weigh and cut off small bits as needed. To shape it, I dump a blob into the center of a piece of wax paper, fold the paper over the blob and with the help of cookie sheet, push the blob inside the paper to form a cylinder, like so (this method also works well for cookie dough)...