Abstract: A fiber optic cable tray system with a three dimension array of pulleys is disclosed, comprised of a central, stacked linear array of flexible, low friction through guides attached to substrate, and a multiplicity of the length buffers arrayed on the substrate, wherein the length buffers each include a spring-loaded moving sled with a multiplicity of freely rotating pulleys on a moving common shaft, and a spaced-apart fixed common shaft with an equal multiplicity of freely rotating pulleys thereon, wherein the fiber optic cable wraps in a repeated circuit around opposing sets of pulleys on the moving shaft and on the fixed shaft and is routed through one of the low friction through guides to a fiber optic connector at the distal fiber end. Multiple identical trays can be stacked on top of one another within a common housing, to produce modules with a number of cables in multiples of 12.

Abstract: Described is a tactile structure having a plurality of tactile elements, the tactile elements providing tactile sensations for at least a portion of a user's body that is actively engaging the tactile protrusions. Furthermore, a plurality of tactile structures can be assembled to create a tactile system having multiple passageways.

Abstract: A play structure having a header connecting the tops of two side supports such that the side supports are spaced to define a pathway. Streamers hang from the header into the pathway and textured protrusions attached to the side supports extend into the pathway. The streamers may be bead chain, plastic strips, or the like. The textured protrusions may be spheres, feathers, fibrous bristles, or the like.