Here's how to make a decent bookend out of used CDs.
Firstly, gather materials up(no glue needed):
2.three or more CDs
Step 1: cut the slices
As the picture shown below,three cds are needed here,two as the base and back ,and two slices as strengthening ribs.
Use a bow saw to cut all the cds with proper size and two grooves on the base cd for mount ribs.