Step 1: What You'll Need
~ Ribbon. I used the 6 colours of the Pride rainbow (less than 50cm/20" lengths of 10mm satin ribbon for each colour), but you can use whatever colours you like: flag colours; Christmas colours; team colours...it's up to you! You'll need at least 6 strands of ribbon, but more will give a fuller look.
~ A lighter
~ A car with an antenna
Step 2: Measuring the Ribbon
Step 3: Assembling the Dangler
Wrap the neatly stacked ribbons around the cable tie leaving a short amount of ribbon on one side (have a look at the second diagram) and put another cable tie through the loop.
Tighten the first cable tie and make loose loop (about 2cm/1" in diameter) in the second cable tie.
Add a third cable tie loop (about 2cm/1" in diameter) to allow the dangler to twist about.
You could use metal rings for the second and third loops if you have access to them, but cable ties work fine.
Step 4: Neaten Up the Ribbon
VERY IMPORTANT: If you have ribbon that frays melt all the ends using a lighter. The wind will unravel it surprisingly quickly if you don't.
Step 5: Mount Your Dangler
To mount on your antenna, simply slip a cable tie through the third loop and tie tightly to your antenna. Cut off the excess cable tie and you're all done.
If you make one I'd love to see a photo of it!