one of the easiest DIY's. All you need is a jar, some baking soda and some body nourishing oil (choose something inexpensive because you are going to use a lot of it)
Start to fill the jar with the baking soda (some people also use sugar but the b.s. is less aggressive on the skin so I prefer it) and then drop in the oil. Mix until you see it has a good consistence, you may prefer more oily or less so it's up to you. Then just use it! How easy and natural right?