I don't carry a make up bag anymore. When I was young it contained powder, eyebrow pencil, lipstick and not much else.
When camping it contained soap, flannel, shampoo, hand cream, lip salve, comb and nailbrush, sunscreen.
My handbag has pockets in which I stash lip salve and eyebrow pencil. I've got some 'powder papers' somewhere - a tiny book of papers with powder impregnated on them to prevent a shiny nose - not used for ages.
Following on, is there anything you carry about with you in your handbag 'just in case' but has rarely been used?