Guardians of the cord ends: wire protectors and bullion from Rings & Things are just the jewelry findings to keep your ends from fraying.
All About Crimp Ends, Covers, & Cord Ends for Jewelry Making — Beadaholique
Ridged Cord Crimps - 13mm, Hobby Lobby
These crimp tubes are longer crimps specially designed to hold a slippery stretch cord - with no need for knots. They are sized to secure the typical sizes of stretch cord. Use crimping pliers for the strongest hold and most professional finish. For added security, put a small amount of bead stringing cement inside the crimp just before crimping.
Beadalon Silver (plated) Crimp Tubes for 1.0mm Stretch Cord
Wire & Thread Protectors, .031 Inch Loops Sterling Silver (10 Pieces) — Beadaholique
Crimps, Cord Ends and Jewelry End Caps, Jewelry Findings
Jewelry making findings, tools and supplies - SewGuide
Jewelry Making Article - All About Crimps - Fire Mountain Gems and Beads
100pcs Antique Bronze Brass Wire Guardian Jewelry Crimp Jewelry Findings 4x5x1mm
Crimp Bead Cover Cable Thimble Wire Guardian Crimp Endcap , Crimp End Floater Clasp Magnetic Clasp 925 Sterling Silver SOLID