Double Ended Trigger Hooks are probably the most useful accessory you can buy! They can connect anything with a D Ring to anything else with a D Ring.
Deluxe 3 inch (7.5cm) Wide Buckling Cuffs, 10 inches (25cm) long
Deluxe 3 inch (7.5cm) wide Buckling Ankle Cuffs,12 inches (30cm) long
Deluxe 3 inch (7.5cm) wide Ankle Cuffs,15 inches (30cm) long
Velcro Ankle Cuffs
Pair of Leather Wrist Cuffs