I'm writing a story that takes place in the near future. I haven't and won't be specifying an exact date, but it takes place some time in the next twenty years or so. Technology has advanced a decade or two. VR and AI actually do the things we wish they would do now. Things like self driving cars and 3D printers have changed the way people live, but no more so than any technology ever does in a short period of time. People have the same problems and absolutely no one's wearing a jetpack. You get the picture, I'm sure. Here's my problem. The first scene takes place in a dance club, and I can't think of changes to make that would denote "this takes place in the future." I can't wait for chapter two to suddenly spring that on people either. So I need some help coming up with things that might be different in a club ten or twenty years from now. Everything I've included so far from glow-in-the-dark drinks to crazy clothes to light shows all sound like things I saw in clubs as early as fifteen years ago or more. Any ideas?