T.B.
I used the throw it away method for my preschooler. I first made the organization child friendly like the bins that you mentioned. I tell my daughter that I don't mind her and her sister (18mos) making messes as long as she understood she had to clean it up. When she refuses I get out a big black trash bag and start picking things up myself. The first time I did this she went into panic mode! It has really worked. Now even my youngest helps cleaning up. We always pick up before we go somewhere, before we take naps, and before we go to sleep. When I told my toddler it was time for a nap last week she started picking up toys and putting them in the basket without me asking her too! I was so proud! Now I do need to explain I still do lots of picking up and cleaning but at least now they are starting to take responsibility for their things.