Print out a page of 12 cupcake flags. Grab some toothpicks and glue and you are ready to decorate your cupcakes! There are two pages in this pdf file - the first with the name of the flag, the second blank.
This is a quick way to string up a line of Union Jack bunting! With 7 little flags per page you won't need to print too many pages to get a nice long line, and you could lay multiple page on top of each other while cutting out.