DS(7) is notorious for losing stuff. I make sure everything he owns is clearly labled adn am usually able to retreive stuff lost at school.
A friend often takes DS to and from a club along with his own DS as he goes every week anyway and helps to supervise (he offered, I never asked!). They often need to bring stuff - a water bottle or a lunch box or a jacket or jumper depending on the weather and if they are going to be outside, etc. And not suprisingly DS keeps coming home without anything he isn't actually wearing. I keep asking the other parent if he knows where the missing things are adn explain DS forgets stuff, could he keep an eye on things etc. But for the most part I've just stopped sending with him anything that is not absolutley essential and/or disposable but sometimes that's not possible. A couple of weeks ago they were going to be outside and rain was forecast. When the other parent collected DS he asked me if he had a jacket, as he thought he would need it. I handed the jacket to the parent. DS never even wore it. So when he came home without it I asked the parent where it was. He said it was not his responsibility, he only offered to drive, not be responsible for DS' belongings! I'm really annoyed but don't know what to say! It's now finished fort the summer as well so dont' want to start an argument right before we all go away but .. AIBU?