Drill 5 holes into a CD (large enough for an LED to fit in each)
Connect the LEDs in a parallel circuit.
Put LEDs in the drilled holes.
Run the USB wire through the PVC and attach to the parallel circuit.
Hot glue one CD to the bottom of the PVC for a sturdy base.
Hot glue the LED filled CD to the top of the PVC
Glue two CDs to form a triangle at the top to reflect light from the top of the LEDs.