Any ideas?

Hello! My best friend is coming up to visit from Colombia for the first time in ten years. We wanted to get a tattoo together but we're torn on what to get. We want something that represents our friendship and possibly how we've stayed friends for so long while being in different countries. We want something small (Colombian peso conversion means things cost about triple for her). We would love any suggestions!!! We've got some ideas but I'm curious to see if anyone else could give ideas that we could work with. Thanks so much!