What to write on a message in a bottle?

I am a college student and am on my last day of winter break. I had a thought a couple days ago about putting a message in a bottle and placing it near a place lots of people walk by. I’m curious to see if people will read it or not but I am not sure what it should say in the first place. I also thought about making a new email address and saying email me if you read this to see if anyone actually reads it or not. Does anyone like this idea?

So the question is what message should I write for others to find?

any other constructive thoughts or comments would be appreciated too.