K.R.
There is a website called www.housefairy.org It is really cute and is great for kids of all ages. You should take a look at it. Most nights we have no problem getting my almost 3yo to pu toys before bed, partly because it is a nightly routine and also because if he doesn't he won't get to do what he wants (bath, milk, singing a song, whatever it is he wants that night).