I ship down diapers, disposable bibs/sippy cups, snacks for DS and us, breakfast stuff for all of us, paper plates/bowls/cups, plastic silverware (and probably a paring knife for cutting apples and such), a roll of paper towels (to wash and dry sippy cups on), laundry detergent, dish soap, liquid toiletries, ponchos, salt/pepper/sugar, Lysol disinfecting wipes (to wipe down the phone/remote/bathroom), tons of handwipes, diaper wipes, ziploc bags, Tide to Go pen, juice boxes (triple bagged), little toys and glow sticks that I've been picking up for months to keep DS busy in line and swim diapers. I'm sure I'll end up sticking other things in there just so we don't have to carry it all plus DS and DS's car seat through the airport