I have recently started using colored gels over my strobes in a lot of shots. To hold the gel over the strobe I have been just taping it using blue tape, this left a lot to be desired. So a couple of days ago I fabricated a gel holder that attaches to the flash.
Here is the complete system consisting of the flash, gel holder, and gels from Lee. Shown is the free Lee Sample Pack. The holder also works with the Rosco Gel Sample Pack gels.
Click here for construction details on how to build your own. I now also offer these Gel Holders for sale. Visit GelHolder.com for details.