Ideas for a pinky promise tattoo?

I want to get a tattoo that resembles pinky promises. I do not want the word ‘Promise’. I want something to resemble it or resemble togetherness with my lover.

Things that I have thought of are the infinity symbol (I thought of each of us getting half so when we promise it makes a whole symbol.

I like the idea of both of us getting a half of something that makes a picture.. but remember its on our pinkies so it’s a small canvas.