DIY DOOR MAT: Glue Gun, Scissors, River Rocks at the dollar Store! and Shelf Liner (or mat) in a matching color. So great - it's hard to find a door mat that is large enough to go in front of the door with out looking rinky-dink and stupid :)
Anti-slip remedy for rugs! Rather than buying 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!