I haven't seen a clock with lava, but Spencers has a clock with two pillars of bubbles on each side. Sounds lame, but looks pretty cool.... There are LEDs under the water tubes and the colors change through 4 or so phases. I had to convince myself that I didn't actually 'NEED' it the last time I was there. I did however, leave with 2 lava lamps, which I NEEDED.....right?
Bert
6-ft-under.com