I remember the cool ones which allowed you to customize it, like put blocks of rubber with letters and symbols on the bottom. Then there are the ones which allow you to select dates and numbers on the top, but they are less customizable. Haven't really seen a stamp in a few years though.
lol that is old stuff mate.
Now they have built-in printers into the rubber stamps, with OLED touch screen, you customise your shit put the stamp on the paper and press stamp and
you got it, no ink no mess