All these are great ideas. I have a 1/4 quilting foot for my machine and love it (I do have to watch myself as I like to go too fast too!!! LOL)
I also have found some help from a 1/4 inch masking tape called "Quilters Masking Tape" that I tape to the edge of the material and then sew as close to it as I can. I did this with my hand piecing too. You can also tape it to the machine when you find the true 1/4 inch from your needle!!!