Believe it or not, that beloved 1960s relic that once cast a warm, unnatural glow on hippies everywhere is officially 50 years old today. And even though you may still see lava lamps churning away in basements scattered across the country, they are a very much a product of their time.
When I say "yourself," I mean "whack a tealight candle underneath." It's certainly more DIY than plugging it into a wall socket and flicking the switch. One tealight is good for around three hours of '70s-style fun.
"A strong wind is produced as the centrifuge induces a cyclone...The smell of boiling insulation emanates from the overloaded 25 amp cables. If not perfectly adjusted and lubricated, it will shred the teeth off brass gears in under a second."