Planning

I am planning on going to Romania, Belize, Costa Rica, Hawaii, Ireland, England, and Germany.
I create packing lists via independenttraveler.com
Here is an example:
Important Documents and Necessities
Cash
Driver's license and photocopy
Hotel reservations
Insurance Information
Medical and vaccination records
Money belt/pouch
Passport, visa(s) and photocopies

Personal Items and Hygiene
Body lotion
Cologne/perfume
Conditioner
Cosmetics
Cotton swabs
Curling iron/hair straightener
Deodorant
Face wash
Feminine hygiene products
Floss
Glasses
Hairbrush or comb
Hair care products
Hair dryer
Hand sanitizer
Lip balm
Mouthwash
Nail clippers
Razors and shaving cream
Shampoo
Soap
Tissues/paper towels
Toiletry bag
Toothbrush
Toothpaste
Towel/wash cloth

Clothing and Accessories
Belt
Dress(es)
Dress shoes
Extra hangers
Gloves/Mittens
Jacket/fleece
Jewelry-limited
Knit hat
Pajamas/sleepwear
Pants/trousers
Rain boots
Raincoat
Scarf
Shirts
Shorts
Shower shoes
Socks
Sweaters
Sweatshirts
Sneakers
T-shirts
Underwear

Medications and Health
Allergy pills
Anti-itch cream
Bandages
Cold medicine
First-aid kit
Pain relievers
Prescriptions
Vitamins

Gadgets
Camera and charger
Cell phone and charger
Converters and adapters
Extra memory cards or film
MP3 player
Spare batteries
Video camera and charger

On the Plane
Books or magazines
Eye mask
Quart-size bag for liquids/gels
Travel blanket
TSA-approved luggage locks
 Coloring books
 Crayons
 Food/snacks
 Playing cards
 Stuffed animals

Beach, Camping and Outdoors
Compass
Flashlight
Sunglasses
Sunscreen
Umbrella
Water bottle

Miscellaneous
Address book
Chewing gum
Drinks
Double-sided/duct tape
Highlighters
Journal
Pen(s)
Sewing kit