This is how you can power 18 strong LEDs ( 5050 LEDs 60mA@3V) from mains 220V@50Hz. The most expensive part is probably the capacitor of 5.8uF on 400V. These LEDs give around 20 lumens. 18 LEDs = 360 lumens which is the light power of incandescent light bulb of 25W. And here you burn only 6W. Resistors must be of 1/2W power.
