Some embodiments are directed to a fastener assembly for attaching a cargo liner to a male fastener of a vehicle. The fastener assembly can include a cap defining a substantially cylindrical center portion configured to receive the male fastener therein, and a plurality of tabs each spaced from the cylindrical center portion. The fastener assembly can also include a ring-shaped retainer defining an opening with a plurality of protrusions that each define a ledge configured to receive a corresponding one of the tabs.