I must admit that I'm a bit jealous of those who live in a place where being lead in public on a leash wouldn't have the real and morality police beating down their door
I think however, you were probably looking for some actions that were a bit more discrete. So, thought I'd just give you a few ideas Master and I have used or seen implemented by others.

Instuct your girl walk only on your right side, one step behind.
Have her open doors for you.
Don't allow her to sit/stand until you have first.
Have her ask permission to leave your presence.

When out at a restaurant:
Order dinner for her. This can actually be tricky sometimes. I've seen so many instances where the waitress will turn to me after Master has ordered the main part of my meal and begin asking me questions such as what kind of dressing or potato I'd like.
Don't allow her to begin eating until you have.
If you drink coffee, have her prepare your cup for you. Adding the right amount of sugar, creamer ect.

Hope those help just a little.