Quiz-Time Systems makes battery-powered red quiz boxes for Churches, Schools and Youth Work in the USA and overseas. Seat Pads or Handheld Switches are used by 10, 15 or 20 contestants, and only one light on the Control Panel turns on to indicate who is first to respond to a question asked by the quizmaster. First invented for Bible Quizzing in 1961, the equipment is also used in academics, and it is convenient worldwide because of no need for electrical adapters and they can be used both indoors and outside. Another business on my LinkedIn profile is The Indi Brush Rest, which is on Facebook. Designed as individual toothbrush rests, they are small plastic items in 15 colors, and they are versatile for many other uses.