Make an led light bulb - without soldering !!
Step 1: Parts
What you need is - 4 leds, one 10k 1/2 watt resistor, one 0.22 uF 400 volt capacitor and one wire connector !!
This runs on 230v AC. For 110v AC, change the capacitor values (to 0.47 uF, 250 volts).
Warning: This involves AC Mains ! Do not attempt, unless proficient.