Abstract: Transaction cards having a security cover to selectively obscure transaction information and related methods are disclosed. A transaction card may include a card body having a first layer and a second layer secured to each other, and a cover portion pivotably movable relative to the second layer about a cover rotation axis coplanar with the first layer via a hinge portion, wherein, when in an obfuscation orientation, the cover portion is coplanar with the first layer such that one or more elements of transaction information is obfuscated when viewing the transaction card.

Abstract: A toy building set with interconnectible building elements and comprising an energy source, an energy accumulator and a consumer of energy as separate units which may be built together with the building elements, wherein the energy accumulator may be coupled to the energy source so that energy from the energy source is transferred to and accumulated to the energy accumulator, and the energy accumulator may be coupled to the consumer to supply energy accumulated in the energy accumulator to the consumer.