Planting a clematis trellis is on my 101 in 1001 Days Goal List - it's in fact! I love this idea of hiding the downspout by building a trellis around it. Not what I had in mind originally - but this goes on the list of ideas for sure!
Each time you crack an egg open, instead of tossing the shell into the trash, drop it into an open container that you keep in the fridge. When the container is full, crush the shells into small bits and sprinkle them around the base of your plants.