3 boxes, with their recent high/low and their respective open/close, and the 50% line of the high/low. All adjustable for preferred timeframes, colour and thickness.
My personal preference is previous week 00:00 to 00:00, yesterday 00:00 to 00:00, and the day before 00:00 to 00:00 (NY timezone). Another could be the London, NY, and Asian sessions (which you have to manually place the timeframes for). As said, you can adjust it completely to your own liking. Enjoy!