From this..
To this..
(http://www.halfthedeck.com/images/shoetree3.jpg)
Shoe tree's seem to crop up allover the world. People tie their laces together and chuck them over the branches.
(http://image46.webshots.com/47/6/66/4/2527666040044276082UFTFnX_ph.jpg)
People also seem to have a habit of chucking their clothing on trees too.
So, lets look at things that get left behind/abandoned/forgotton.