When you feel bored, you want to find something to do right away to fill up the void, be it your phone, junk food, etc.
For once, try not to do it. Taste the emptiness within for a bit. And something you haven't noticed before would emerge. It may be a solution to the problem that has been troubling you for a while, a feeling that you're avoiding to face, a body ache that reminds you to adjust your posture, or just a silly childhood memory that pops up out of nowhere. Whatever it may be, it is definitely worth the time to take note of.