Question -
What groovy item was invented by Englishman Edward Craven Walker in 1963?
Options:
A .  Leisure suit
B .  Lava lamp
C .  Eight-track tape deck
D .  Hot comb
Answer: Option B Groovy, baby! Lava lamps, which were a fixture in every hip pad in the 1960s and 70s, featured a mixture of water and colored oil that created swirl patterns when heated by a light bulb.
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