With the Blockbuster light chain, you can put up to 20 letters, numbers or symbols in the right light and create your own individual birthday wishes, congratulations on your wedding or your personal greetings. You are not dependent on sockets because the chain of lights with the mini light boxes is battery-operated. How about a romantic “Honey, marry me” on the beach at night or a funny “Change the lightbulb!” in the dark room?