I’ve used some of the old discs we’ve been donated to create a more decorative register and I always get compliments about it especially when the sun shines on them and they reflect beautiful patterns everywhere!
I’ve heard that they are also good to hang from trees to keep birds away. There are so many things that can be done with them to prevent them from filling our rubbish bins... Here are some other examples I found through Pinterest!
CD Earring stand