I added Hotdotz to my bass last night, and they are wonderful! Not as elegant as the Alembic solution, and if I were ordering a bass, I would let the wizards put them in. However, for broke musicians looking to get lights for an existing bass, they are great! No change in balance due to the battery pack, connecting wire visible only at close range, the array is close to invisible when off, and very nice when on. I wish I had known about these sooner! I also couldn't belive how fast I was hooked on them- I turned the lights off for a slow song (at church) and felt lost! A definite stocking stuffer for the bassist (or guitarist) on your list.
Larry