Reader Erica points out this story about a resourceful British maker -

A British businessman fed up with being targeted by vandals has installed a 30-foot Roman-style catapult on the premises to hurl bucket loads of chicken manure at culprits attacking his rural offices.
[...]
The defense arrangements, which include priming the catapult with chicken droppings from a nearby farm, include 32 closed-circuit TV cameras, security fencing and motion-sensor lights — all guarded by a no-nonsense sign that reads:

“WARNING: These premises are protected by smart poo …”

Wow, I wonder if he’s considered writing an instructable for that setup.

Read more – Ex-stuntman targets vandals with nasty catapult

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