Yep, I made a DIY DIN bar like this for less than $5 at the local hardware store. My variation has a slit in the elbow so I can thread the cable before the capsule, and I also lined the end of the elbows with craft felt that was lying aroud the house. A little spray paint, and your the shizniz of the section.
A search will give you multiple threads on the subject IIRC.