My favorites are Shape Cut Ruler which I use to cut strips and squares, my 6 x 24" ruler which has a guard that keeps it in place while cutting, my snips which I hang around my neck on a piece of ribbon and my Vintage Singer which has the perfect stitch, better than my new Janome!
My most used item of course, is the seam ripper! :) :) :)
I do a lot of froggin'; rip-it, rip-it, rip-it!