As I prepare for the club's Bald Eagle field trip, once again I will make use of a personal equipment checklist that I have been using for the past ten years or so. My checklist is created in Microsoft Excel, and I have three "worksheets" in one file - one is for camera gear, one is for clothing items, and one is for things that I need to get done before I leave, such as making the house payment, or stopping by the ATM for some cash.
Another thing I do before a traveling shoot is to make sure my plastic parts trays are stocked up with such things as extra AA batteries, extra lens caps, and so forth. I have found that carrying along these parts trays pretty much assures me that I won't forget anything that is really critical. Most other things can be purchased at a local Wal Mart store.
Want to take a look at my checklist? Please post a reply to this message, or send me an email message and I will gladly send it to you.