This wooden piano will make a Schroeder out of your kid

Actually, hardcore Peanuts fans will know that Schroeder's toy piano is a lot lower-slung and, in fact, a grand rather than an upright. But its presence in the cartoon is a sign, at least, that the mass-produced toy piano has been around a good half a century, if not more.

This version is in fact from Vilac, and the retailer promises that it sounds 'almost like the real thing'. With only eleven white keys, that's quite a statement, but it'd be worth a go for those wishing to encourage early musicianship.