I have one named Grace Cypriana (17 mos) and Lillian Nicole ( 7 years).

Diapers are a must (whichever variety; I prefer cloth because they are reusable; cloth diaper _liners_ are available that will absorb just as much as a regular disposable but are the thickness of a few sheets of paper).

After that, water and food (be it breast milk or other; youngest had absolutely no problem transitioning overnight; she did have a problem after her teeth came in. She refused baby food and demanded what we were eating).

Shelter: think seriously about a stroller. Models are available that have sun-shades, and even panniers (you will not believe the quantity of stuff you will have to carry). Awesome things.

Sun-block and hats are a must for babies. So is a good diaper rash ointment--something with zinc oxide and a moisturizer. The "Gerber" clear ointment is worthless; A&D is better but not best.

Think about a packable playpen or crib. Doesn't weigh much, frees Mom or Dad up for some work around the area.

Oh, yeah...in addition to infant Tylenol or equivalent, you will need rehydration solution (electrolytes), try Pedialyte, and glycerin suppositories. <img src="/images/graemlins/smile.gif" alt="" />