I think there is a market for an ATV radar to
determine the real contour of features below
ground. It would be cool to bore a small hole
and drop in a device capable of generating a
3D point cloud showing the density of material
in the vicinity.

The Meteorite Men series used a simple PVC frame on wheels towed behind an
atv. The "loop" consisted of one wire hooked to some electronic device. It
was very simple, and not very expensive. They found a lot of BIG meteorites
with it. That was a very interesting series, and I hope it comes on again.
I use a high power magnet while walking around, and have picked up metal
particles. We are in iron rich country, so I am not sure any of these are
meteorites or not. But meteorites are pretty distinct, and when you find
one, there's little doubt.

Steve