Well I damn sure know what it takes to make one. After I destroy the first one with a high pressure water jet and find lights, batteries and a light board, but no explosive material, I assure you anyone with any training can - make that - should be able to tell you what this was not. Hours later they are still treating them like bombs. Over reacting, poorly trained, low IQ fools.
Over reacting and caution is precisely what keeps this fools alive.
Over reacting is precisely what causes high cost, foolishness, loss of liberty, and ulcers.
I am very careful as I move about the world and work in a highly dangerous line. I do not however over react, I leave that to others.