We’ve been meaning to try these for at least half a year and finally did this week. My son loved using an eye dropper to squeeze food coloring (somewhat diluted with water) onto coffee filters to see how the colors spread. He squeezed large amounts of liquid with each drop, so I gave him a stack of 5 – 6 filters at a time to reduce the amount of liquid gathering on the paper plate underneath. After a quick dry in the South Dakota wind, I used chenille stems to gather groups of two and three filters together into bright flowers. What a lovely bouquet!