ADHD memes

Most kitchens probably also feature a microwave.

Most microwaves also have a timer only mode, that keeps occasionally ~~screaming~~ beeping untill you manually turn it off.

Failing that: oldschool wind up kitchen timer.

Pretty cheap, will last a long time as long as you don't bake them, and they are a specific object, for a specific purpose, and winding them up is more tactile, and they generally ~~scream~~ ring quite loudly.

Make a hard rule for yourself: never turn on a burner or the oven without first setting the timer.

Might also help you figure out actually proper preheat timing for various temps, but yeah, then reset the timer when actually cooking/baking, then be 100% sure everything is off whenever you see/hear a non clicking kitchen timer.