Abstract: A toy block includes a body having external faces. A compartment is located behind each of the external faces and houses a magnet located freely within the compartment and adapted to turn upon magnetic interaction with another magnet external of the body so as to align attractively therewith. Two such toy blocks can be brought together face-to-face in any orientation and the magnet of one block will turn automatically into N-S alignment with a magnet of the other block so that the blocks attract and connect.

Abstract: An erasable graphic panel includes a substrate having a dark surface, a translucent film overlying the substrate and adapted upon application of pressure from a pointed implement to adhere locally to the substrate and thereby produced a visible trace of movement of the pointed implement upon the film. The panel also includes a slider positioned over the substrate and having a lifting blade extending under the film and being movable across the substrate to lift the film and thereby erase the visible trace.

Abstract: An erasable graphic panel includes a substrate having a dark surface, a translucent film overlying the substrate and adapted upon application of pressure from a pointed implement to adhere locally to the substrate and thereby produced a visible trace of movement of the pointed implement upon the film. The panel also includes a slider positioned over the substrate and having a lifting blade extending under the film and being movable across the substrate to lift the film and thereby erase the visible trace.

Abstract: A drawing board having a body and a generally transparent screen on the body. The screen has front and rear sides and contains a viscous opaque liquid and iron dust in the liquid. A magnetic eraser is movable within the body between a rest position away from the rear side of the screen and an operating position against that rear side for operation to move, through magnetic attraction, the iron dust away from the front side of the screen such that the iron dust becomes invisible on the screen. A spring biasses the eraser towards the rest position. A pen having a magnetic tip is used to draw on the screen.

Abstract: A levitation hand-holdable blower comprises a pistol like housing that has a butt 10 and a barrel 11. A motor 12 and a fan provide a flow of air along a channel and out of vents 17 to support a ball (not shown) in levitation manner. The blower is easily transportable and simple to operate.