Aww, poor kid. I typically have to send a letter out late every fall reminding parents to send mittens, hats, boots, etc for the upcoming weather changes. I also put a sign right in front of the cubbies where the parents have no choice but to see it. It has helped but there will always be occasions when some items are forgotten. My biggest beef is parents who complain that their children's things go missing, despite the fact that I've asked them repeatedly to label every item. Ugh! I too have extras, just in case. Unfortunately, I don't have extras of clothing, so I have had to send a little one home in a t-shirt of my 12 yr old son's because there was an accident. Fortunately, they usually feel like it makes the child feel special (for reasons I can't fathom) so they go home happy.