What one item do you always forget to pack for vacation?

I have packed and NOT forgot anything on many occasions. The week before you go keep a list of things you used that day such as toothbrush hairbrush phone charger night cream then when your packing go over that list and go over it again when your done packing. It works for me and my husband. Good luck and have fun on vacation.

Always come out with the packing list before any trip and before packing them in, go thru the list again and do a check. You will never forget to bring anything along this way..Be advise Never pack at the last minute, you'll surely forget even your underwears...

Definitely toothpaste and shaving cream. I think I forget both of them because I tend to use them the morning I travel, and then leave them sitting on the bathroom counter as I run out the door lol. Always wind up buying them again, so I've amassed quite a collection of various half-opened tubes of toothpaste and cans of shaving cream.

I usually forget to pack my shaving gel and razor. I've done it like 4 times :P

I always forget to pack a belt

ive forgotten to pack pajamas 3 times! now what i do is i make a checklist on microsoft word of EVERYTHING i want to bring. and when i think of something else i open that document and add the item. keep it saved on your computer and everytime you go on a trip print out the document and make sure you have everything! worked for me! hehe my dad does it to i got the idea from him years ago =]

Imodium

This will NOT apply to you since you're a guy, but most of the time, I forget my shower cap. So if the hotel doesn't provide one, I need to go out and buy one which is no big deal, but then I wind up with several shower caps. Just be sure you take enough i. d. to get through the airport if you're flying. Have a good trip.

I seem to forget to pack shampoo. I have the big bottles at home and it doesn't fit in shaving kit and it is out of sight for the most part in the shower caddy in the bathtub.