Homemade Liquid Spray Starch
Fill the spray bottle half-way with Sta-Flo liquid starch. Add water to the bottle and fill the bottle the rest of the way up. If you aren't comfortable with eyeing the measurements, add 1 cup Stay-Flo liquid starch and 1 cup water to the spray bottle.
I got this from The Simple Life 2015, go on over and see what you can find!