Going out just for a day trip gets a collapsible water bowl, a bottle of water, and poop bags. Depending on what we're doing I might also bring treats, treat bag, clicker, and a tug or ball (or the Tuggy Ball), the long line, and also the first aid kit depending on WHERE we're going. Like the first aid kit came along when I drove down to the lake because I was over 30 minutes from home. Agility trial gets far more stuff. It's like moving in somewhere when I go to an agility trial LOL.