Nowadays, more and more people no longer use optical discs, causing many optical discs to be discarded. Then, you can use these waste CDs to DIY by hand into small mosaic-like pieces, and then reassemble them into a large whole. Transformed into a decorative mosaic. There are very good artistic effects. There will be colored reflective gloss.
Just use materials: scissors, glue, and CD. The specific tutorial is as shown in the picture below.