You will need:
Several shades of Blue Crayons, Wax Paper, Iron-set to low heat setting, Old tea towel and Paper Towel, Scissors, a Pencil Sharpener, String or Yarn or Embroidery Floss (Blue) and a Hole Punch.
Choose some blue crayons and peel off the paper so they are ready for sharpening. I chose several shades of blue, turquoise and white. Lay out a piece of wax paper and sharpen the crayons overtop of the wax paper. Spread the shavings out. Next cut another piece of wax paper the same size and place it on top of the shavings for a crayon shavings sandwich. I did the craft on a wooden cutting board with a tea-towel under the wax paper and paper towel on top of the other wax paper. The shavings move around a lot so you may end up with some melted to the towels. My main thought was trying to protect the iron from permanently melting crayons to it. Now you make a quick run over the top layer with the iron. Adults should do the ironing-start at lowest setting if it doesn’t seem warm enough increase a bit at a time.
Draw a raindrop shape onto the wax paper and cut out the water drop shape. Next use a hole punch to pop a hole in the top of the raindrop. String up the raindrops and tape or wrap it around a stick or dowel or wooden spoon. If you haven’t got anything to use just put it with a line of tape right on the window. If I had blue painters tape I would have just put a line of that on the window.