Good old Martha taught us that rather than buying those ridiculously expensive anti-slip mats for a rug, just turn it over and run a few lines of acrylic-latex caulk every 6 inches or so. Let dry and flip over and your rug wont be going anywhere!
Remembering this when i paint my new house -- To get rid of paint fumes... add a tablespoon of vanilla extract to a gallon of paint, mix well. It does not effect paint color! And makes the whole room smell like vanilla when you're done!