Welcome.
What have you done so far to setup your e-packs? There are so many things that can be done that you probably are doing already, without thinking about it.
A baby-bag is an e-pack of sorts, being filled with diapers, clothes, food, cleaning supplies, toys, etc. A toddler-bag, being similar to a baby-bag will have all those things, but, will be modified to suit that toddler. Sometimes mom's purse becomes that toddler-bag. The family car (truck, etc) expands on that toddler-bag by having all the security stuff inside it, including a car-seat or booster-seat as well as toys, blankets, food (water) and such.
If you can let us know a little more about your family, we might be able to help you fine-tune your kits, well, till the next year when they are all just one year older. :congrat: