A tool of sorts, a sacrifice, perhaps even a queen! What is this thing, that can be USED, for many, many things?

In senior year of high school, there is often a day tied to this. Do this to someone on a date, and I truly hope you feel regret. At a restaurant, some think this is fun, like ringing a doorbell before cameras took charge.

I am born as a puddle on a scorching hot plate, But I flip in the air to seal my sweet fate. I wear a gold jacket, round, fluffy, and light, And I love to get drenched in the morning’s daylight. You can stack me up high like a tower of old, Then melt a square crown of yellow and gold. Drizzle me with amber from a maple tree’s heart, And breakfast is ready to be torn right apart.

In order to teach the Green Cross Code, The UK government employed these 'Kings of the Road', Or perhaps more famous than this pair, Is the blue one known for running fast everywhere!

I can represent millions of people, or just one person trying to get a taxi ride.