I must admit it isn't completely original. I just saw the same idea posted in another Instructable here, and I can remember seeing something similar in a windowshop as decoration but hey...those aren´t my story, so let get to work!
Step 1: The ingredients
Ehmm...to be honest...I did not had the time to wait until I had collected about 300 necessary cups so I went to my local supermarket and bought them. (however I drink way to much coffee, in such quantities that there was a time it was my main source of inspirations as you can see on my website)
I rather would have had paper cups but they only had plastic ones, so I sticked with those.
Besides that Instead of using glue I picked up my stapler and ( a lot of) staples.
Further more you'll need electric wire with an attached socket, an energy-efficient lamp (with normal lamps I'm afraid the heat will meld the plastic), some (3 or more) pinbolds, a big washer and some small ones.
Let me list that;
-a stapler with staples
-electric wire with socket
-a heatsource (a lighter or something like that)
-A sharp metal pen (for instance a scriber) with the thickness of the wire