Expandable wood drawer dividers

I am the type of person who thinks that one can never be too organized. Anything that keeps things more neatly, in better order, or makes things easier to find is welcome in my home. Things like drawer dividers. I find these especially handy for those dresser drawers in which I keep more than one type of clothing. Socks and underwear for example, tend to get all mixed up when in the same drawer. A divider keeps them apart, which makes it easier to find the pair you are looking for.
Expandable wood drawer dividers:

Expandable wood drawer dividers pictured:
Top: Lipper International Bamboo Kitchen Drawer Dividers, Set of 2
Bottom: Lipper International Bamboo Deep Kitchen Drawer Dividers, Set of 2