Oh, they just don’t make science kits like they did 50 years ago. This one came with radioactive sources. It was $50.00 at the time (and can fetch more than $7000.00 if you can find one now):

The set came with four types of uranium ore, a beta-alpha source (Pb-210), a pure beta source (Ru-106), a gamma source (Zn-65?), a spinthariscope, a cloud chamber with its own short-lived alpha source (Po-210), an electroscope, a geiger counter, a manual, a comic book (Dagwood Splits the Atom) and a government manual “Prospecting for Uranium.”

Gilbert U-238 Atomic Energy Lab (1950-1951)
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