Well, my slave is very young and, since this is her first M/s experience, very shy.
So I like to take her to crowded, noisy restaurants, wearing a remote controlled clit vibe. It's always fun to crank it up when the waitress is at the table. Plus it's helping her to accept her latent desire for other girls.
Yeah, I know it's tame, but like I said: she's young and inexperienced, so we're taking baby steps for now.