I have been playing around with something I picked up at a craft fair many years ago. It's a pleat maker and is available here.
The website is a little clunky and the photos aren't my cup of tea, but this is a rather handy tool if you want a simple way of creating uniform pleats ready for stitching.
You put your fabric into the pleat maker and then press it with an iron. You can then take the fabric out and go straight to the machine to stitch the pleats in place.
I've used it to make a little top (to go with the shoes of an earlier post). By pressing the pleats in two different directions, you can create a centre front panel. This could also be a cheaper alternative to buying a smocking pleater.







