Matching sister tattoos?

My sister and I would love to get tattoos for when I turn 18 in a few months. I know we should really figure out something for ourselves but I just want some ideas and my sister and I will go from there, probably adding on or taking off some of the ideas.
Info: My sister is 6 years older then me but we are very close and she acts like she is my age. Right now she lives in Florida and I live in Minnesota. My sister and I are quite different, we don’t have a lot in common but that is what kind of makes it fun but harder to choose for a tattoo right? Any other questions just ask.