The last time I was in Paris, a little boutique on the rue de Rennes I had seen months before in the construction phase, was finally open. In it, I found an indispensable product: a soft purse organizer. Not only does it keep things in place, but it also make changing handbags a cinch because you just move the whole organizer from purse to purse. And it comes in different models, sizes and colors.
Mine is a leopard pattern but I could use another in a bright. I haven't found the brand, Tintamar, in America, but it can be ordered from the UK.