Since I was a child, warning signs have called my attention. I don't know why but they're nice :) In picture bellow I show a table lamp that I've made. I used many refused materials I found. Sorry for the lack of details on each step or in building, because I make this tutorial after I have finished.
(Otherwise you can buy a lamp-kit that already have all these previous items together).
First you need to open the bottom side to gain space to work inside, Fig. 1. I have no much care in this part, sorry. The plastic they use to make this spool is hard to work, so be patient.
After that, you need to make the holes for the switch and connectors if you are using, Fig. 2. Some people maybe rather use a switch along the wire, but I don't like.
The original spool color was red. To create a more interesting appearance I painted with mat black and after dry I sanded it a bit. This is the final result, looking worn in Fig. 3.
After finished you can cover the hole with velvet or felt, Fig. 4. Make sure that your circuit is correct and working.
In the last image, Fig. 5, I put the power cable and the phone charger.