I just wanted to share this fantastic tool I acquired at a thrift store right before the swap. It was in one of those mishmash bags of stuff. Originally, I purchased the bag because it had some patterns for crochet in it. After further inspection, which means digging around through the loose pieces of rope, torn pages, and other stuff I care not to think of, there were these little boxes filled with sewing machine feet. At first I was confused. I swear, without knowing what they are, they look like some sort of steampunk, sci-fi torture devices. I've been sewing a while now and had seen similar parts, but had never purchased any due to the high cost ($20-75 a piece). Plus, I'm not a professional seamstress, so I had no need for all the gadgets. However, I won the sewing machine lottery with this bag since it contained 2 of these ruffler feet, 2 zipper feet, 2 blind hem feet, an even feed foot, a button machine-looking thing (that I have yet to try out) and another I haven't figure out what it's for yet.
I finally tried out my new Ruffler on the apron I sent out. It was really fun to use, yet scary at the same time. I'm so used to the fabric being fed evenly and the way the Ruffler jumps was too funny. You can see a video by allacksairright on The Ruffle Foot that shows how it works. It feeds the fabric in a bit, then suddenly folds a section, shoving it to the needle to be sewn down.
So, if you need to do ruffles for anything, I'd suggest trying this little diddy out. It a great to to have in your sewing kit. I have a lot of fun with it!