Sort by job
Empty the drawer and make three piles: used weekly, used occasionally, and unidentified. Put chargers and cables next to the devices they serve. If you cannot identify a cord, label it as unknown with today's date rather than guessing its function. A month later, you can decide whether it deserves space.
Label before bundling
Write the device or use on a small paper flag at one end. If two cables look alike, label both ends. Coil each cable loosely enough that the connector is not bearing the tension. Keep the label visible once the bundle goes back in the drawer.
Pick a holder
String, reusable hook-and-loop strips, or a rubber-coated reusable tie can keep a light bundle together. The best choice is the one you will actually reopen. The 12-inch Nite Ize Gear Tie is a candidate for repeat-use bundles; the manufacturer describes a bendable wire core and rubber exterior. Check the actual size and instructions before purchase.