So, you can at first turn every lamp off, but instead of suddenly turn the lights back on, you can turn a decorated lamp at first that will make the effect more dramatic. The lamp decorating can be decorated on a tree or on the wall with various color of light. After the candle is blown, than you can turn the lights back on again. It is so because not only that they get surprise, but because it means that they are loved by people who throw a surprise party for them. However, if you plan to make a surprise party to your loved ones, you should consider several things like the concept that can be a pajama party or just a regular party, but one thing that most people use to surprise someone is the light. Interior Design.