Yes, I've had this problem, especially with the first round children when I was the one designated to "hold coats" - four kids, perhaps hubby's too.
Eventually the kids get older and they have to carry their own stuff. We recently went to the fair. Hubby had his stuff in his pockets. I had my micro-shoulder bag - I really only need my ID and debit card. DD decided to put her money in a purse then that in little backpack. Sure enough as we walked around more stuff got stashed in her backpack. DD complained, "How come I'm carrying everything?" Ha! Now she knew how it felt to be a mom. We took a break at home and grabbed more daypacks before we went back.