Here it is...the Christmas "gift" gift. The ingredients are: glass block, diamond drill bit, drill, BIG fancy bow, 35-count light set. Optional: glass etching materials. I left mine clear and with a big enough bow, it works just fine. They also sell glass blocks with many pre-etched designs. (Shop for the glass blocks in the spring and save 75%.)
Instructions: Determine the front and back of gift. Drill hole in bottom right or left of the "back". Thread the lights into the block, stopping after the last light. You'll need all of the remaining cord left out. Tie a big fancy-schmancy bow (I used ribbon with wire in the edges - helps with shaping) or you can buy pre-made bows and afix to the top after wrapping the block with flat ribbon. Voila! Fini. I think your family and friends will love this "gift".
And here it is...