Needed and wanted

We are working on the difference between needs and wants right now. An important life lesson for sure, and one I don't always have a handle on. Yesterday Chet was building a garage out of a Wiggles domino set and some duplo and was looking for a space to put one his cars. He turned to me and asked: "is it needed or wanted?" Excellent question I thought, and explained that it was wanted - cars don't 'need' garages but it would be nice sometimes for them to have them. I then went on to say that he needs food and water and air and sleep and cuggles and he grinned at me and said 'yes, and kisses too'. I think he has got the idea mostly, although not sure the conversation will stop the daily plaintive demand that he 'needs ice-cream'!