The Monkey House

Squirrel has not found his PE shirt, but has lost his English folder.

While looking for these, he found Spider's PE bag (under a chair in the maths room). On inspection at home, this turned out to contain

• tracksuit bottoms belonging to 'Emily Dutton'
• PE shirt belonging to 'JOL'

But absolutely none of

• Spider's brand new tracksuit bottoms (named)
• Spider's brand new jumper (named)
• Spider's shorts (named)
• Spider's shirt (named and logoed)

Emily and JOL, I'm very sorry. Spider is back at school now, putting your kit in lost property and trying to find some of his own. I reckon we can pick up a horrible smelly, nameless shirt from the piles on the floor of the changing room, and there's a pair of scuzzy, too-small tracksuit bottoms he can go back to wearing. Or he can do PE in his underwear on Parker's Piece. 

But what on earth can I do to get his kit back and keep it back? I put in an hour last week chasing down the two remaining items (now gone with the rest). He can't afford to pay for new kit, but I'm considering docking his pocket money by a few pence per missing item per week. Or do I just accept that the school lets everyone wear anyone's kit, so my disorganised child will always have the last item off the floor on any given day?

EDIT
He found the jumper.  Now he's not talking to me because I suggested perhaps he shouldn't take his guitar into school until he's shown he can take care of less valuable items.