Body scrubs are very easy to make youself, you basically just need oil and sugar. You can use any oil you like; I use olive oil, but coconut or sunflower oil for example works just as well (or, a mixture of those). I make mine with coffee grounds as the caffeine sets the blood circulation going and is said to thus tighten the skin.
For variation you can use raw cocoa powder instead of the coffee. Or, a few drops of essential oil.
You can also switch about half of your sugar for sea salt. Put in a few drops of peppermint or lavender and you get a nice foot scrub.
For my face I use milder scrubs with smaller, softer grains than sugar. But we can look into that some other time.