A toy is something to play with. Leicas, Wistas, Speed Graphics are all things that can be played with. For collectors who do not use them, they are indeed nothing but toys.
My BMW is a toy, and so is my very fast crotch rocket motorcycle. They are objects of play.
They become tools when used. A plastic box with a hole, a Mickey Mouse camera to get an image onto film, a Holga used to expose film or grafted onto a digital camera, is a tool.