Connector element includes an enclosure made of a generally non-magnetic material having an open face; an insulating plate with a plate aperture; a permanent magnet placed inside the enclosure, the magnet dimensions preventing egress from the enclosure through the plate aperture; a washer made of a conductive soft ferromagnetic material with a washer aperture being larger than dimensions of said permanent magnet, placed inside the enclosure. Also disclosed are transformable electronic devices, optionally including displays, toys and educational kits built using the self-actuating connector elements.

A puzzle with tactile clues that includes a tactile image that can be felt by a visually impaired person includes orientation indicia for the puzzle, as well as orientation indicia for individual pieces. The puzzle orientation indicia are raised, distinguishable clues. The piece orientation indicia are indicated by the shape of the tabs and blanks. The puzzle is waterjet cut to ensure a tight tolerance, and constructed of a washable material so it can be disinfected. Optionally, a guide puzzle of less difficulty may be included with the primary puzzle to instruct the assembler on assembly and the final image.