One Wrap is a double sided hook and loop (velcro) that is able to grab onto itself and attach wherever you want it. It is commonly used to weave molle pouches onto belts, chest rigs, and plate carries. You can also pair it with a snap hook to create a glove hanger. Other options include managing/routing comms cables, securing loose webbing ends, and attaching/securing small piecies of equipment without a designated attachment point.
 
This is an extremely versatile and inexpensive piece of kit with unlimited uses.