I compiled a detailed checklist before our Goa trip. And believe me it was so useful. Just remember its always better to reduce the amount of clothes that you carry for yourself, gives you a good reason to shop too
Minimum 10 sets of clothes, beachwear, and 2 pairs of shoes one for indoor and another outdoors. During winters sweaters, caps.
Towels, Soap, Shampoo, Lotion, Sunscreen
Diapers, Wet tissues, Plastic covers (to throw off diapers), rash Cream
Bug and Mosquito Kit
Odomos, mosquito repellent coils etc
Clips, Rubber Bands, Combs
Toys and Books
Few familiar toys and books, and some hand toys to distract while traveling.
Dettol, band-aids, colic meds, Fever meds (sinarest, crocin), ear and nose drops for air travel. My doc prescribed sleep meds which we never used. You can carry it with you if they get too cranky
Biscuits, cakes, rusk, yogurt etc for travel
We carried an electric cooker so no cooking vessels, 2 bowls, 2 spoons
Cerelac, cereal powder, salt, jaggery.
Rice and Dal Powder, masalas.
Tetra packed milk
Everything in zip pouches.
Dish washing liquid, scrub and some washing soap if kids clothes gets soiled.
The list looks long but if organized well, it fits into one bag. I will update more on what I cooked etc. Do let me know how your list looks like.