Open sided shoes
I have to agree with Shadow on the open sided shoe with the closed toe, especially if it is a narrow shoe where alot of the sole is visible.
Mule type high heels also work, with the "slap, slap, slap" as she walks by giving just a moments' view of the entire sole, or any dangling shoe while sitting cross legged.
Anytime I see a belly shirt on a pretty woman, my thoughts drift to running a finger along the exposed skin, gently tickling there. Even if it is just a slimmer of a glimpse I find it very sexy. Nothing better than grabbing a waist just under the short shirt and start causing some giggles.
Backless dresses, at a formal dinner party. Short finger traces along the back or along an exposed rib cage. Just enough to cause a reaction and a smile, just a secret you 2 share in a crowd of people. A promise of what may come later that evening, knowing stares at each other, feeling like a lion laying in wait before he pounces.
Well, that certainly was a stream of conscious....