I carry a smaller bag with me, but often I simply leave it in the car (it's come in handy a few times!).
Many say I carry too much in my kit, but I'm simply using all the space available:
www.veganostomy.ca/2015/03/my-ostomy-travel-kit-march-2015.htmlWhatever you decide to keep in your emergency kit, I always suggest TESTING it by doing a full appliance change in a random area of your home without a sink or toilet handy, then you'll quickly learn what you need to change/add/remove