Here is some half hitching around a carabiner using # 24 cotton twine - the technique works very well with paracord
Tie half hitch around ring and tag end. Pull tight. Continue half hitching until desired length. Tie at least 4 loose half hitches reeve Working End through these hitches. Starting with loop in top center (second loose loop). One at a time. Tighten the remaining loops (four in all)
Half hitching makes a nice handle cover. Shown here in cotton cord but paracord works very well knife sheath tied around cardboard tube Handle for tool box