Same here. Actually two.
One, is my actual GHB/BOB.
The other, is what I call the "Life" bag. At one point, 3 women lived in the household. This bag has things like:
OTC meds (for headaches, sickness, menstrual, you name it)
Tweezers, grooming stuff, emergency makeup essentials
Spare socks, stockings (in case they got a run), spare slippers (for when high heels hurt)
First aid stuff, even things like Orajel, Visine, etc.
Small hairbrush, travel sized hairspray, hair ties, bobby pins, etc.
Spare contacts, eye fluid, and these dial glasses (for any prescription)
Even some jerky and other long lasting snack items
All kinds of other stuff I'm forgetting.
Just, any time we were out, and the gals (or us guys) needed something, and didn't have it handy, eventually, it made its way into the "Life" bag. Now, rarely any time that what we need isn't in that bag in some way, shape or form.