This happens all the time with DD18 and DD16 (though DD18 is off at school, so it is her problem now). The worst is that they insist on wearing flip flops when traveling to a softball tournament. They say that they will put on the cleats when we are approaching the field...which is great, but you can't put on your cleats if they are sitting at home. More than once we have been driving on a toll highway when I look around and don't see cleats...I do usually remember to take inventory before we leave so this doesn't happen too often. They get annoyed with the inventory and have insisted they have everything, only to arrive at the field without some key piece of equipment. They are not the only ones to do this though. I see plenty of teammates do the same thing - I think it is pretty common among all sorts of kids.