I got this idea from a YT video and I made an automation that will turn on light of desired color every day at fixed time, and then it can be dismissed with double/triple press of the button.
Useful for pill reminders!
EDIT: 2025-02-28: Multiple devices for LED notification AND button dismissal available
EDIT 2025-03-14: I have added a dependency on helper boolean entity, which you can use in voice automations or other scripts