A tie-down strap retention device may have a strap board and a plurality of retention flaps. The retention flaps may form a self-locking structure to retain extra portions of the tie-down strap. A first edge portion may project upwardly from the upper surface of the strap board. A first strap retention section may extend inwardly from the first edge portion toward a center portion of the strap board to form a first space between the strap board and the first flap retention section. A second edge portion may project upwardly from the upper surface of the strap board. A second strap retention section may extend inwardly from the second edge portion toward a center portion of the strap board to form a second space between the strap board and the second flap retention section.

A clip for securing one or more cover panels within a containment structure includes an annular portion partially-enclosing an internal space and two compressible legs adjoining opposite ends of the central portion. The clip further includes a clasp with first and second securing tabs configured to fixedly secure an object within the internal space and apply an outward force on the compressible legs.

A rope control device a main body defining a central opening and first and second side portions, projections extending from the main body, an end recess defined by the first and second projections, an end friction surface formed at a juncture of a projection and the main body, and a bar. With the bar in a first position, the first rope portion is extended through the central opening and at least partly around the bar. With the bar in a second position, the main body and the bar define first and second opening portions of the central opening and the first rope portion is extended through the first and second opening portions and at least partly around the bar. The second rope portion is arranged within the first end recess such that, when the rope is under tension, the second rope portion frictionally engages the first end friction surface.

A rope control device a main body defining a central opening and first and second side portions, projections extending from the main body, an end recess defined by the first and second projections, an end friction surface formed at a juncture of a projection and the main body, and a bar. With the bar in a first position, the first rope portion is extended through the central opening and at least partly around the bar. With the bar in a second position, the main body and the bar define first and second opening portions of the central opening and the first rope portion is extended through the first and second opening portions and at least partly around the bar. The second rope portion is arranged within the first end recess such that, when the rope is under tension, the second rope portion frictionally engages the first end friction surface.

A clip for securing one or more cover panels within a containment structure includes an annular portion partially-enclosing an internal space and two compressible legs adjoining opposite ends of the central portion. The clip further includes a clasp with first and second securing tabs configured to fixedly secure an object within the internal space and apply an outward force on the compressible legs.

A rope control device a main body defining a central opening and first and second side portions, projections extending from the main body, an end recess defined by the first and second projections, an end friction surface formed at a juncture of a projection and the main body, and a bar. With the bar in a first position, the first rope portion is extended through the central opening and at least partly around the bar. With the bar in a second position, the main body and the bar define first and second opening portions of the central opening and the first rope portion is extended through the first and second opening portions and at least partly around the bar. The second rope portion is arranged within the first end recess such that, when the rope is under tension, the second rope portion frictionally engages the first end friction surface.

A clip for securing one or more cover panels within a containment structure includes an annular portion partially-enclosing an internal space and two compressible legs adjoining opposite ends of the central portion. The clip further includes a clasp with first and second securing tabs configured to fixedly secure an object within the internal space and apply an outward force on the compressible legs.

A rope control device a main body defining a central opening and first and second side portions, projections extending from the main body, an end recess defined by the first and second projections, an end friction surface formed at a juncture of a projection and the main body, and a bar. With the bar in a first position, the first rope portion is extended through the central opening and at least partly around the bar. With the bar in a second position, the main body and the bar define first and second opening portions of the central opening and the first rope portion is extended through the first and second opening portions and at least partly around the bar. The second rope portion is arranged within the first end recess such that, when the rope is under tension, the second rope portion frictionally engages the first end friction surface.