Now that's a toy you don't stumble across very often! Not sure what I'd do with it, but others may have a use: https://www.radiacode.com/
Radiacode – Portable Radiation Detector, Dosimeter & Spectrometer

Radiacode is a fast, portable radiation detector, dosimeter, and spectrometer with real-time analysis. 20× faster than Geiger counters, it identifies isotopes, tests food for contamination, and supports research and safety.

@cstross I have no possible use for this and yet I need it
@jimbob @cstross Radiation-related brush fire risk study?
@BillSaysThis @cstross woke up, read the morning news, and suddenly have a potential use for this 🙃