Abstract: A paper binding device includes a bottom plate and a fastening strap having a first engagement side and a second engagement side configured to repeatedly and releasably engage with the first engagement side. A portion of the first or second engagement side is fixed to the bottom plate. In another example, the paper binding device includes a bottom plate and first and second fastening straps. Each of the first fastening strap and the second fastening strap includes a first engagement side and a second engagement side. The second engagement side of the first fastening strap is configured to repeatedly and releasably engage with the first engagement side of the second fastening strap. The first engagement side at an end of the first fastening strap and the second engagement side at an end of the second fastening strap are respectively fixed to two ends of the bottom plate.

Abstract: A bed mattress assembly is disclosed. The bed mattress assembly includes at least one bed mattress unit having a frame to be coupled with at least a buffer pad. At least one cover fitted over the buffer pad is capable of being releasably clamped by a plurality of clamping elements so as to retain the cover in position relative to the frame. At least one of the claming elements extends over the joint between two adjacent bed mattress units, allowing the two adjacent bed mattress units to be jointed into an integral structure.

Abstract: A sectioned ergonomic bed mattress is disclosed. The mattress includes at least two sub-mattresses each with a top and a bottom cover. Each cover may have a color or pattern unlike any other of the covers such that a user can vary the appearance of the bed mattress by assembling the sub-mattresses in a number of permutations. A plurality of clamps is used to combine the sub-mattresses, and at least one clamp extends between two adjacent sub-mattresses.

Abstract: A picture frame having a channel on the front surface of a border, a slot on the rear surface of the border and a decorative plate engageable within the channel or the slot by engagement device. The channel has a number of annular holes formed on it, and the engagement member is substantially rectangular with a convex cross-section and a corresponding number of annular legs extending from it. The annular legs are engageable with the annular holes. The decorative plate is readily removable and is changeable with other decorations. The border further includes ferrous components so that small magnetic ornaments can be magnetically retained on the border.