1. A tie-wire holster comprising:(a) a tire-shaped body formed of a unitary section of flexible polymer material having a Shore A hardness of between about 15 and about 75, the body including a top circumferential portion and first and second radially inward extending sidewalls;
(b) the body having an outer diameter between about 3.5 and about 7 inches, and the sidewalls having a central opening between about 0.5 and about 5 inches in diameter;
(c) at least two slots formed in the first sidewall, the slots extending from an inner edge of the first sidewall into the top circumferential portion;
(d) a spool-shaped attachment member with a first flange and a second flange connected by a web portion, the first flange having a larger diameter than the second flange, and the first flange being positioned against an interior of the second sidewall and the second flange being positioned against an exterior of the second sidewall.