TETHER

In some embodiments, an elongated tether may comprise an anchor end, a retention end, and a stretchable elastic section configured to allow stretching along a length of an elongated tether. The retention end may comprise a plurality of retention apertures each characterized by a retention-aperture diameter, and a retention terminus characterized by a retention diameter that is greater than the retention-aperture diameter. The retention end may be configured to enable the retention terminus to be compressed and manipulated through a first or second retention aperture to form a compression fit and a loop of a first size and a loop of a second, larger size. The stretchable elastic section may be configured such that an overall length of the elongated tether does not exceed a maximum length when subjected to a given amount of stretching force.