This heart shaped knot is perfect to show that your never-ending and intertwined love. ‘knotty’. I tried it myself with some ropes i took off from old gift bags and im not sure how to connect it as a bracelet or necklace but i think it would be a pretty decoration for a valentine card. 
here’s a video on how to tie it: http://www.youtube.com/watch?v=7yo5nSXND5o (<— they do other really awesome knots )

by S

This is a dragonfly knot designed by this guy: http://www.youtube.com/user/TyingItAllTogether

Here is the direct link to the dragonfly knot tutorial: http://www.youtube.com/watch?v=c8yi5ixTo9Y

I plan on adding some beading to the wings to make it a bit more girly. Also, the end of the body will be put on the middle finger and the head will be by the wrist, I’ll add more cording to make it a bracelet at a later date :) The bracelet will probably have some sort of square knot closure.