I used to be awful about sheet-washing, then decided to start the every-week cycle. Got a third set of sheets so even if I didn't get laundry done I'd at least swap the sheets on the bed. Having a kid now means changing the sheets weekly is an even better idea, so glad we were already in the habit.

I do sort socks and underwear, but into two categories each. Thongs and regular, athletic socks (all the same type anyway) and other. I will fold to save space if I have to, but think it's a waste of my time. If the drawer is that full it's probably time to purge the old stuff.