It’s a perennial problem – of all the mountains of artwork that young children produce, how much of it should you keep? Maybe you are sufficiently ‘ruthless’  to be able to throw it away without a qualm, but at the other extreme if you are a hoarder like me, you may find it difficult to throw any of it away.  There comes a time however when rational decisions have to be made if you’re not to be swamped. But how to make them? It can be difficult to create hard and fast rules here, because what makes something special for one person will be entirely different for another, and ultimately…