It's messy and dangerous to leave phone cords or wire lying around loosely, but if you're not planning to make telecommunications your life's work, you probably don't want to invest in a professional staple gun.
Here's a good compromise. It's as secure as a staple gun, and much neater than duct tape or nothing at all. All you need to install it is an ordinary hammer. Hammer them into wood, not concrete, metal or sheetrock. Choose black or white. 1/4-inch diameter opening is suitable for phone, data, or video wiring.
Try not to put the nail into your finger or the wires.
Pack of 25. Place clips about 18 inches apart, and close to corners.
For shipping charges, we assume each pack of 25 to be equal to one phone cord.