Floating Flower Tip - Most flowers float pretty well on their own until they start to pool with water and slowly sink. For a longer lasting centerpiece, use bubble wrap to make little skirts for your flowers.
I’ve been kind of obsessed with empty toilet paper rolls lately. There’s so many cool DIY projects you can do with them as you will be seeing over the next couple months (that was your warning). But I am in love with these burlap napkin rings that I made.