Abstract: A bar of transparent soap contains a opaque rectilinear grid having square cells along a central plane of the bar of soap. In use, the soap applied to the skin of the user providing indication whether or not a skin abnormality such as a mole is growing.

Abstract: A multi-function mouse pad adapted to be utilized with a computer mouse and that includes apertures therein so that the mouse pad also can be utilized as a stencil or template. The apertures may be in the form of round holes of varying diameter so that the outer diameter of a tube can be measured. The apertures may also have different geometric shapes. The mouse pad further can include a needle gauge aperture to be utilized to measure the gauge size of a needle. The mouse pad also can include round projections extending therefrom for purposes of measuring the inner diameter of round, hollow tube. Such projections can extend from the top surface or a side surface of the mouse pad.

Abstract: A disposable spirometer mouthpiece comprises a resilient tubular member, having inner and outer surfaces and a defined wall thickness, the wall of the tubular member having first and second longitudinal zones of reduced thickness and thus reduced strength which allows the spirometer mouthpiece to be collapsed into a flat state for packaging and storage. Preferably, the tubular member is resilient, such that when released from a package, the resilience of the tubular member allows it to resume an essentially cylindrical shape for testing. After testing, the mouthpiece is disposed of and because of reduced zones of thickness, the mouthpiece is easily collapsed to its flat state by the weight of other waste to minimize disposal space.