The Gilbert U-238 Atomic Energy Lab is clearly the greatest toy ever invented.
No. U-238 Atomic Energy Lab
I had a pretty fancy “200-in-1” electronics kit of my own as a kid with a light bulb, buzzer, and other components for building radios and other basic circuits. Unlike the U-238 Atomic Energy kit, mine did not include four separate radioactive elements or a certificate to order replacement radioactive elements when the included samples inevitably “deteriorate” over time.