Some of you may have heard of Vsauce's DONGs, which are things to
Do
Online
Now,
Guys.

There are links to a bunch of cool websites that you might not have heard of. A few of Vsauce's are:

If you ever wonder if the Large Hadron Collider has desroyed the world yet, go to
http://hasthelargehadroncolliderdestroyedtheworldyet.com

Vote for the Most Awesomest Thing Ever at
http://mostawesomestthingever.com

For some entirely random clips, visit
http://thebest404pageever.com or http://z0r.de

To see a scale of the universe, visit
http://www.numbersleuth.org/universe


Anybody have some of their own DONGs to share?