Abstract: A binder comprising: (a) a front cover; (b) a rear cover; (c) a spine extending between and connecting the front cover and the rear cover, the spine being made of a different material than the front cover and the rear cover; and (d) a binder mechanism; wherein the spine is a reinforced polymer that is sufficiently flexible to allow the front cover, the rear cover, or both to move relative to the spine so that the front cover, the rear cover, or both are openable and closeable.

Abstract: A kit for creating a folded block structure comprises a set of blanks to create different shaped folded blocks without the need to use adhesive or cutting tools. Each blank includes sides, the sides having edges, the edges comprising side edges, tab edges and flap edges. The sides are joined to one another along adjacent side edges. Folds lines are at the side edges. The tab extends from each of the tab edges. Tab fold lines are at the tab edges. A flap extends from each of the flap edges. Flap fold lines are at the flap edges. A tab slit at or near each of the flap folds lines is configured for receipt of corresponding ones of the tabs. Notches may be formed at the ends of the tabs. Adhesive elements can be used to adhere folded blocks to one another to create a folded block structure.

Abstract: A kit for creating a folded block structure comprises a set of blanks to create different shaped folded blocks without the need to use adhesive or cutting tools. Each blank includes sides, the sides having edges, the edges comprising side edges, tab edges and flap edges. The sides are joined to one another along adjacent side edges. Folds lines are at the side edges. The tab extends from each of the tab edges. Tab fold lines are at the tab edges. A flap extends from each of the flap edges. Flap fold lines are at the flap edges. A tab slit at or near each of the flap folds lines is configured for receipt of corresponding ones of the tabs. Notches may be formed at the ends of the tabs. Adhesive elements can be used to adhere folded blocks to one another to create a folded block structure.