Growing up, we would just fold them down and your heel would hang out. Wish we would've had this hack back in the day
The online retailer ASOS posted a hack that turns normal tube socks into no-show ankle socks. So they won't show if you're wearing low-tops or slip-ons.
They posted a video. And it's simple when you see it, but hard to explain.
You put a tube sock on, just like you normally would. Then you start peeling it off, so it turns inside out. But don't take it the whole way off.
When you get to your toes, you take the extra part of the sock that's dangling, and wrap it down UNDER your foot. Then hook it behind your heel.
If you do it right, you end up with part of the sock covering just the front half of your foot. The rest is hidden under your foot, and hooked on your heel. And your sock won't show at all.