Heat waves recreated by placing a wavy glass texture in front of the camera point.

The day I finally win the lottery... I thought the toughest part of this one was going to be the impact point, but it turned out to be the easiest.

This turned out to be much more difficult than I thought. I wanted it to be a view from inside an ant hill, looking down several tunnels at once. But since you can only point the camera one direction at a time I had to opt for a more cavernous approach.