OK, this is just a bit of fun, with no deep significance at all.
We had about half an inch of snow at my house today, and I walked in it on my driveway while fetching the mail, leaving a nice set of snowprints. Here is one of them:
The cool thing is what happens if you use photo processing software to invert the image (sending dark to light and vice versa). It then actually looks like a cast of your foot. See for yourself: