My great grandfather's step mother was the descendent of a tailor that helped Benjamin Franklin create stamping devices to prototype the country's first stamps. Many years later, she donated the leather stampings she had inherited to the Smithsonian.
Here's a little tutorial on how to make your own rubber stamps. I like to use a stamp carving block as this allows you more freedom with the size. It can also be nice to affix your stamp to a woodblock to make stamping easier.
Funny Giraffe peek-a-boo stamp kids gift - Around the corner giraffe stamp - Cute and funny stamp for diy, stationery, stocking stuffer