My mother bought roses for a new vase that she recently bought. However, not all of the roses fit inside so instead of throwing them away, I decided to try something new. I took off the petals off of the rose buds and placed them in the bottom on these thin vases. As I slowly filled water into it, I kept my fingers inside to keep the petals separated and so they would not float to the top. I had no idea if this would work, but I decided to try it and I ended up loving it.
Tip: When I tried with a wider vase, the petals just floated up to the top. So make sure the vase is slender.