IF YOU RUIN THE LAMP, IT IS NOT MY FAULT. THIS IS AN EDUCATIONAL HOW-TO PROJECT FOR THE SAKE OF THE LAMP.
Step 1: Materials...
Ikea Solar Table Lamp ( I bought at Ikea)
5v Small Transformer (was a cell phone charger...)
22 Ω Resistor ( RED RED BLACK ) It is okay to use this resistor. It won't ruin anything.
Diode (found in common electronics! 1 amp diode will do!)
Drill (to make hole for wire to come out to transformer)