Here's how to do it on the cheap, and all you need is:
- Stiff solid copper wire (not stranded)
- Hot glue gun (high temperature gun is recommended)
- Metal clamps of some kind (I suppose plastic clamps would work the same, but not as strong)
Step 1: Peel Away Rubber Coating
Believe it or not, but the rubber coatings they put on these clamps peel off surprisingly easy. As long as you can get your finger nail or the tip of a knife under neath it, it rips right off.
This should expose a hole, that I assume is there to help keep the rubber intact?
Step 2: Choose Wire Length
While you're at it, cut about 2cm of coating off the wire and make it into a L shape, try not to bend it EXACTLY at where it exits the coating, but a few mm up from there, as when you go to insert it into the hole we just exposed on the clamp in the previous section, it will not fit tight if bent too tightly.
A good rule of thumb is to bend it like 2-3 degrees lower than a 45 degree angle, this ensures that most of the wire makes contact with the clamp.
Step 3: Glue Time!
You want to insert the L part of the wire into the hole, and to the elbow, and then hold it as tight as you can so that the wire lays flat on the inside of the clamp. From here simply pour your hot glue in there and try to hold it as steady as you can.
When it's dry, you can turn it up side down and glue around the wire's insulation and put a big blob around the base of the coating before it goes into the hole, this will make a nice tight fit.
Step 4: That's It!
Unfortunately I wasn't thinking, the clamps aren't big enough to fit around my desk, but I'm sure I can use them in many other places, next time I'll get bigger clamps!