Ok seriously why didnt I think of this? Medium to heavy upholstery fabric, canvas drop cloth and floor gripper fabric. Im doing it this week cuz I want a perfect one for my laundry room and kids playrooms!
Use duct tape to turn several small rugs into one large area rug - Like this idea because smaller rugs of the right material can be run through the washing machine. Also good if you have an odd size area to fill.
Clever idea: It's fabric, spray adhesive, a rubber rug backer. I folded over and hot glued the edges. I then applied two good coats of water-based satin poly. The result is a water-proof/ spill-proof kitchen accent rug that keeps my tile floor protected.