Since Vi Hart has got me so intrigued with hexaflexagons I decided to give it a go and make my very own one today. Here's what it looks like!
I screwed up though, I should have made it with a thicker paper since the markers soiled the other side of it.
If you wish to know more about this, check out this series of videos for more information.
Also, tomorrow it's Martin Gardner's birthday, so I guess it's a good way to celebrate it.
~Eriol