Inspired by a home-made egg timer in an English pub, the lava lamp became a symbol of the fluidity of social mores in the 1960s. Like the bean bag and kinetic toys, it also represented a new humour ...

Call them ’60s relics or hippy home accessories, lava lamps have been casting their dim but groovy light on interiors for half a century, having hit British shelves 50 years ago on Tuesday. A British ...