This CD rack looks really good (if somewhat kitsch) and is not rocket science to make. You just have to measure stuff properly and be careful while you work, or, like me, you will have to start again three times.
Step 1: What You Need
1 5mm threaded rob (usually sold in 1m lengths)
8 5mm hex nuts
5 5mm lock nuts
100 5mm rivet washers (usually sold in packets of 100)
1 20mm dowel stick