I've acquired many panties over the years, my criteria is that I have to know the lady who wears them, that makes the wank a whole lot more meaningful for me. Usually when I need to use the toilet I search the laundry basket if it's in the bathroom or utility but have sneaked into bedrooms before and gone through drawers selecting a pair which will satisfy my cock.
I've also taken a satin bra, satin nighties and a satin short pyjama set... Great wank material