Even though I use the cool felt hangers for my clothes, spaghetti straps still slide off. Here's an easy one: clip tiny bulldog clips (office supply store) on the hanger with the the black part wrapping the hanger, and the silver parts sticking straight up. Then tie a pretty bow (I used gray grosgrain ribbon) around each set of silver pieces. Makes for a pretty closet, and no tops on the floor!
String Dispensers Here’s a great way to reuse empty CD/DVD containers. Drill a hole in the top for the string to slide through, then screw the lid under a shelf and snap on the string-loaded container. Pull down and snip off the desired length and never worry that your ball of string will roll away across the floor dragging its tail behind it!