The straps on my daughter's new swimsuit were a little long and kept falling off her shoulders.  For a quick fix, I took one of her plastic barrettes and clipped the straps together to form a criss cross.  I sent my idea to "Parents" magazine and it was published in the July 2007 issue - see page 87 for a photo (child in photo is not my daughter but rather a model that the magazine used to display my idea).