Tattoo opinions/ideas please?

I have a tattoo with my oldest son's first and middle name on my right wrist, his middle name is a family name. I'm wanting to get a tattoo for my youngest so but I'm conflicted about what to get. His first name is after my soon be ex-husband's family name, a name he doesn't actually go by, and that I would rather not have tattooed on my body. He actually goes by his middle name, Jack which I chose and love. The problem to me is having only Jack would only be one line when my oldest son's tattoo is two lines with both his first and middle name. All opinions/suggestions are welcome! Thank you.