How Much Should You Be Spending on Romantic gesture in a bottle?

http://mylesuhqi576.theburnward.com/10-celebrities-who-should-consider-a-career-in-surprise-message-in-a-bottle

This couple had a creative proposal idea, which was to create an outdoor space with lights and footage from their relationship. If you’re looking to do something sweet at home, strive setting up some rose petals