You will find mostly when we are out on the prowl, although I may wear the anklet as I said in a previous post mostly it is not seen by others. You can always get people interested just by the way you dress, ensuring that their eyes are on you. When you notice that you have their attention, just by giving them the extra look a few times, and while doing so adjusting one's clothes or flicking of the hair as they look on is normally a good sign.
The other more blatant approach is always to get your husband to go over and say to him or them would he/they like to join us for a drink, which is in most cases an invite for something a little extra afterwards.
So unless guys were aware of a woman wearing a particular anklet or necklace, you could be sitting in a bar wanting some fun but guys don't take the bait because there is no real code.
Eye contact is important as is the dress code, which can certainly give the impression that if dressed in a particular way indicates that you are available.