Abstract: An instant block levy system, for constructing a levy, comprising a plurality of blocks, a plurality of connecting pegs, and a plurality of stakes. The block has a top surface and bottom surface, upper shaftways extending vertically into the top surface, and lower shaftways extending vertically into the bottom surface. The block has a ballasting chamber, and a fill hole in fluid communication with the ballasting chamber. The blocks may be stacked, such that a lower shaftway from a top block is concentric with a upper shaftway from a bottom block, so that the upper and lower shaftways can be connected with the connecting peg. The block has stake shaftways, extending through the block from the top surface to the bottom surface, so that the stake may be inserted therethrough, to anchor the block to the ground.

Abstract: A device for removing plaque from teeth comprises a toothbrush having a thick, cylindrical, hollow handle in which are located an electric motor actuable to cause rotation of an eccentrically mounted member and vibration of the entire device, and an ultrasonic transducer actuable to produce high frequency sound waves along the brush. The combination of brush vibration and ultrasound loosens and removes plaque from the teeth.