State University of New York at Buffalo Libraries have a digital collection for universal design products. Some of them are quite interesting, for example, the mouse in the right side illustration. It looks like a regular mouse, but it is much larger than the normal one so that it “fits the palm of the hand and does not require bending of the fingers.” If your hands are sometimes tired of holding the mouse after being in front of the computer for hours, you may want to try out this flat mouse.
I also noticed this wiggly and giggly ball. It “wiggles and giggles when it moves”, so it can encourage babies to follow (learn to crawl!) even before they can actually crawl.
Images from the Universal Design Product Collection at State University of New York at Buffalo Libraries