Have you built one?

[10ClarionSt]

I've just completed building a Large H4rd0n Collider in my garden shed. It's H-U-G-E! You should see the size of it! I'm expecting to get a few big bangs out of it, I can tell you! It's amazing what you can do with a few batteries and Pringles tubes.

[karenmac60]

Och, I've had one on my verandah for donkeys...

[Captin Kirk]

Few batteries and a tube?

I'm sure there's a few on here with other ideas for that combination ...