A rather interesting link by artist Matt W. Moore

by D Sheffield

This image by Gabriel Doyle is a representation of the universal cover of the doubly-pointed Heegaard diagram of genus 1 of a (1,1)-knot.

"Knot Structured" by George W. Hart was made by assembling 30 identical pieces of laser-cut wood. Read more here.

Mobius strip and knot by Rob Scharein (from The Mobius Strip by Clifford Pickover)