He's 11. I told him back at the start of the summer holiday that he wouldn't be having a Facebook account until he has tidied his room. He has made absolutely zero effort. Literally nothing. It would be a simple job to get the snow shovel and a large sack and clear it completely in around 15 minutes.
However, this would make me a hypocrite as my childhood room was very similar and I am simply not a tidy person myself. and i can't bear the thought of throwing away things which may be important.