I've wanted to do an ukulele cake now for awhile and I finally got the chance a few weeks ago. I made a 6" square chocolate cake with Oreo cream filling. Fondant frosting made the ukulele shine. The neck of the ukulele is cardboard covered in fondant. Spaghetti noodles worked great as strings. A little bit of graham crackers and 3 gum paste Plumeria flowers made the cake look tropical.