Step 1: Light it up
Now tape it up and repeat until you have a small pile of glowing lights.
Step 2: Start the wrap
Now pull the rest of the plastic wrap back so it looks like a plastic comet.
Step 3: Tie it up
If you have some small Ziploc-style bags you can use one or two of those instead. You could also try doubling back the plastic wrap and make it more secure. I just had a bunch of LEDs, batteries, and drinks lying around so I put this together and it worked for the few hours I needed it.