I'm sure you know all about the box subscription websites out there. If not, here's the deal. There are tons of companies that let you sign up to get a box full of stuff based on your interests every month (or in some cases every few months). There are box subscription services for pretty much every interest out there. One of my favorites is Birchbox which sends you beauty and hair care products.      At $10 a month, it's a pretty good deal. Each box comes with about four or five samples based on your personal preferences and characteristics. For instance, if you list yourself as having straight hair in your profile they won't send you hair care products for curly hair. If you hate glittery makeup they will send you matte products. The samples are all pretty good sizes and sometimes you'll actually get full-sized products. For any of you that enjoy trying new beauty products, Birchbox is a great deal. It's fun and it can help you save money too.      And on top of that, they have a great…