I usually keep on hand at all times:

energy drink (for when someone has an infection or I need to clean the house and there's no kids)
desalinization kit (for when I get those non-runners)

For when mom or dad getting ready to pass on:

Outfit I want to put the new adoptee in
energy drink
desalinization kit
any work mags I come across (you never know what he/she will be)
Any fruit or candy (to praise the new person to work )