Stampics.com makes rubber stamps using your own photos. The resulting image is akin to grayscale pictures you see in older newspapers, only that with Stampics you get to choose what color your own monochrome will be.
The stamps are created using a technology that captures up to 2400 dpi, according to Stampics. They offer plenty of samples as well as tips on what type of photos will make a good stamp.
You can design your own stamps online. Choose a shape and size, choose a photo from your files then upload it. You can also include some text and choose the color for your ink.
Stampics prices range from $12.95 to $18.95 per stamp.