I don’t think anyone where I work has ever thought this box contains the entire internet, although it has been met with concerned curiosity:
“What does it do?”, I’ve been asked.
“It’s a box with a flashing red light – that’s all”, I replied.
“No, really, what’s it actually for, though?”
In case you don’t know what I’m talking about, then watch this clip of the excellent Channel 4 UK comedy “The IT Crowd”:
The main component is the M34-1H 3-pin LED flasher IC, and the circuit is about as simple as it gets:
I bought the IC from Rapid Electronics, and the box is of the type readily available from Maplin: