a small tube of desitin and a package of migraine ice patches.
desitin is great for heat rash, and migraine ice patches (i like the soft gel type) can be applied to the nape of the neck (or as i prefer-below the neckline of a t shirt or tank top) and provide tremendous cooling. none of my family deals well with heat-and the patches are a godsend (and stay on well-i used them regularly when i did theatre productions, despite heavy costumes drenched in perspiration those patches stay on).
if we are going somewhere i KNOW we will be bring home items from i put a smaller (carry on sized) suitcase inside one of the larger ones then pack whatever we are taking with us. that way IF we need more luggage I've already got an extra piece with us. a roll of mailing tape has come in handy as well-I've yet to not be able to be given a box suitable for mailing at a resort or on a ship-so if I've got the tape at the ready i can always box something up to mail home.
i used to take a small alarm clock and flashlights but since both are on our iphones they are always with us already.
