Today I learned that it is illegal to sell tritium in the us but it is not illegal to buy it in the us…so here is a website selling tritium trinkets that come from taiwan!
They are like glow sticks that last for 10 years, it is perfectly safe unless maybe you were drinking liquid tritium for a few weeks.
I have one of these that’s about 6 or 7 years old at this point and still glowing alright. Pretty neat little things!