Everytime we buy something that comes with SILICA GEL, I keep those silica gel and I used it to dry flowers, Like this flower above, last valentines hubby gave me a bunch of red roses, I took one place it in a jar and pour silica gel on it and seal tight until the flower dried up, I open it yesterday, its two months inside the jar and look the petals are still soft. I love to preserve flowers this way.