If you find yourself without a piping bag, simply make your own by taking a piece of baking paper and rolling it into a cone shape. You can either squeeze the mixture through the point for delicate decoration or, if you require a thicker decoration, snip off the tip to the required size. A plastic sandwich bag will also do the trick. Snip off the corner and either use as is or add a decorating tip as required. Simply throw away your piping bag once you have finished.