Matmos? Coincidence? Mathmos were the original producers of lava lamps, and still going strong -

http://www.mathmos.com/lava-lamps-uk-6494-0.html?gclid=CN_F94aWjrUCFW_KtAodKGEA2Q

(and still expensive!)

The St Annes Cinema (long since gone) had an oil-wheel projector which they used to fill in the time before the inevitable adverts. Musical accompaniment was usually "Popcorn" by Hot Butter -

http://www.youtube.com/watch?v=NjxNnqTcHhg

If you arrived too early, you might have to endure 10-15 minutes of that before Pearl & Dean kicked in -

http://www.youtube.com/watch?v=cxU6LT6DonE

Ross