Home made spray starch...
I heard of people making homemade spray starch and adding a small amount of clear vodka to help it last longer, i thnk about 2 oz of vodka to a recipe similar to this site:
http://tipnut.com/homemade-lavender-starch-recipe/
I havent tried it, i like Niagara its $1.39 for a big can and lasts me a long time.... I saw the last time i got starch in the store a non-aerosol spritzer next to the Niagara, but they hadnt put a price on the product or the shelf, i checked the front 5 items, so didnt buy any. But I like Niagara.