to separate things in a bigger bag. in my speedy for example, hell hath no fury like me not being able to find my diorshow mascara, lip balm, or my pencil. therefore, very cute, lovely to look at wristlets that double as drunk excursion bags that can be clipped to your jean so you don't lose them serve me well!
sometimes also, like when i am just going to the grocery store, i just take the essentials (lipstuff, keys, cell, money) and don't want to have to worry about leaving my purse in the cart and have it stolen when i turn my back!
lovely little stocking stuffers and starter pieces too!