Choose something small enough to fit into your handbag, but large enough to hold a decent amount of coupons.
Drawer dividers were a revelation to me (I am not kidding, seriously, revelatory). I thought they, like shelf dividers, were a waste of time, until I started writing about organizing junk drawers and realized the key to an organized drawer in dividing it into mini zones, which drawer dividers do so well.
Most garage organizers are about lifting the things you have on the ground up onto the walls or into overhead storage so you can continue to fit your car into the space.
You could go with the traditional jewelry box here, but I love the idea of hanging necklaces either on the inside door of your closet or bathroom. This way they are easier to retrieve. I keep the earrings and rings I use regularly on a decorative cake stand in my bathroom. You can get really creative here and make your jewelry a decor element in your space.