I am exactly the same, I hate the mess. I leave it all until the end of the day but it does drive me crazy. DD doesn't really play with toys, she just gets bits out and leaves them everywhere. She does things like collecting bits from everywhere and 'making a museum exhibition' with them - things like pegs, a wooden spoon, a toothbrush, assorted soft toys, plates from her tea set etc. All things that are from different rooms and which take forever to put away!