Digital footprint Puns

I need to write a bit about "digital footprints" for a class.

I figured I should throw a few foot puns in to spice things up.

However, soon I found that trouble was afoot.

I'm starting to run dry and am close to being dead on my feet.

Can I get a few extra hands (and feet) to throw in some ideas?

Toe/heel/knee puns also welcome.