How about some small stuff, tools, that a lot of people might be interested in?
For example, the "w-scanner" and the "w-sensor".
The first is a highly specialist modified toy Trek tricoder, that can tell you handwavium is about, and where it is. Works best for single sources, but can handle "It's all around you". A trained person (even a scientist would need practice, a Trek science tricorder user would learn fastest) can interpret the display to tell the variety of handwavium, and the quantity.
The second is an on-off sensor, which just has a sensitivity dial and an on-off switch. Choice as to how it displays the presense of handwavium, basic models use a flashing light and/or a buzzer, 'novelty' versions might klaxon "Danger, Will Robinson, Danger!".
The design for these would come from an obscure source, "HH Engineering".
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"It is the business of the future to be dangerous" - Hawkwind
For example, the "w-scanner" and the "w-sensor".
The first is a highly specialist modified toy Trek tricoder, that can tell you handwavium is about, and where it is. Works best for single sources, but can handle "It's all around you". A trained person (even a scientist would need practice, a Trek science tricorder user would learn fastest) can interpret the display to tell the variety of handwavium, and the quantity.
The second is an on-off sensor, which just has a sensitivity dial and an on-off switch. Choice as to how it displays the presense of handwavium, basic models use a flashing light and/or a buzzer, 'novelty' versions might klaxon "Danger, Will Robinson, Danger!".
The design for these would come from an obscure source, "HH Engineering".
--
"It is the business of the future to be dangerous" - Hawkwind