Joshua and Anna each have a box too with almost all of their art work in since they were born

And like Connor we went through a stage with Joshua where he would bring back a decorated box from kinder. But I've thrown almost every single ones of those - taking off any pieces of fabric or bits that can be re-used for crafty things at home
Just need to be ruthless otherwise the house would end up completely inundated with 'art'. If they have done anything special (eg for xmas, easter etc) or something particularly nice I keep it, any odd scribbles or random sticky pictures get thrown.
He was actually given a folder with more of his artwork from kinder today (last day before the summer holidays

) with empty pockets at the back for what he had already taken home, so I'm going to sort through his box and put those things in there for him to keep.