A tectonic origami device (100) is disclosed, which includes a flexible supporting substrate (102); and a plurality of substantially rigid planar members (104) arranged on the supporting substrate, the planar members configured in a non-overlapping cooperative arrangement to permit assembly of the device to form an enclosure. The device is configured to be transformable between a collapsed form where the supporting substrate and planar members are collectively in a planar arrangement and an assembled form where the supporting substrate and planar members are collectively assembled as the enclosure.