I'd have to say 'all of it'...for all of it makes quilting more precise and easier and just plain fun. If I had to take only 1 thing...I'd take my needle:))The rest would come:))I just love my whole sewing space...I can go into that room and all is gone out of my head while I create, etc. Skeat...who is always on the lookout for a new notion to continue that cycle;))