What kind of things do people gather for their trip? I heard so many people say they have a box they put things in for their up coming trip. Suggestions?

I have a master list going....everything from number of items of clothing to things like what kind of OTC meds to bring. I have lupus and asthma so I have a lot of prescription meds to bring too.
Here is my master list. Now you know why I'm
(Keep in mind I am going to be on a boat for 25 days...)
2 bathings suits
8-10 undies, bras & socks
4-5 PJs
flip flops
8-10 outfits or 9 tops, 5 bottoms
hoodie/jacket
kids soap, shampoo, deoderant, razors
hairbrush
hair spray, hair gel, pigtails
lotion, chapstick, powder
2 pump soaps
anti bacterial gel
sunscreen
neosporin, bandaids, advil adults kids, allergy meds
thermometer, tylenol, asthma inhaler
nebulizer, saline meds, peak flow meter
books and toys kids
travel documents
rental car info, hotel info
passports
drivers license, atm & credit cards
bag to carry (or backpack)
camera and flash cards, flash batteries, cord
beach towels
metal hangers
clothespins
highlighters, pens
lysol wipes
trashbags, ziploc bags
ponchos, umbrellas
nail clippers
glasses case and cleaner, cloth
travel guides and maps
laptop
cell phone
cords to charge camera, cell and laptop
suitcase lock & keys, tags
watch & alarm clock
laundry detergent
dryer sheets
Tell me I'm not the only one that travels with half their house

I feel like after having 4 kids, I need to be prepared for the unexpected

