Both Mary Ellen's Best Press and Sullivan's Spray Baste are products I use so much that sometimes I think everyone knows about them. For years I struggled with that pesky fold down the center of yardage off the bolt. I tried spray starch, steam, drenching the fold with water and then ironing, even washing didn't take it out! Just a light spray of Mary Ellen's Best Press and the fold is gone. The scents are lovely (comes in unscented too!) and I like the crispness it adds to my fabrics.
Sullivan's Basting Spray is by far (in my humble opinion!) the only way to go when you need to baste a quilt, tablerunner, etc. Just a light spray and you don't have to worry about gummy needles or your layers shifting. It is repositional for a period of time if you find a wrinkle too!