Alternative Birthday Cake: A cake made with Candles. This could be beautiful with just the right height and width candles for a sweet sixteen, a golden anniversary or any other celebration. Even for those with a lot of food allergies or other special needs! But have the fire extinguisher near. I tried a cake with 42 candles on it for my dad's birthday that year. The glow was amazing but we were a bit worried the kitchen was going to light up. It gets hot too.