It's dreadful, isn't it. As soon as you lose your home - becoming instantly vulnerable - you're also cut off from everyday rights & entitlements.
Churches, community centres and some supermarkets collect food bank donations. Once a month I shop for tampons, pads, wet wipes, toothbrush & paste, hand cream and tissues to put in. I add nappies, too, but they wouldn't be for homeless folks!
I'm not sure how easily or often a homeless woman can access a food bank, though. I know most of them have restrictions. It would be nice to hear of any distribution network that was serving women's needs in particular.