A friend of mine has a &quot;mercury blob maze&quot; [1] where you have a little blob of mercury trapped in a plastic container and you have to get it through the maze - it was fun to use at different temperatures, as the blob would want to break apart when hot, or not move at all when cold. Shaking it turns it into 300 blobs.<p>Upon seeing it, my science teacher dad had some cool stories about playing with Mercury 20-30 years ago in high school classes. They used to take it out and handle it, no big deal :)<p>[1] Like these <a href="https:&#x2F;&#x2F;www.google.com&#x2F;search?q=mercury+blob+maze&amp;source=lnms&amp;tbm=isch&amp;sa=X" rel="nofollow">https:&#x2F;&#x2F;www.google.com&#x2F;search?q=mercury+blob+maze&amp;source=lnm...</a>