Aweome!
I will try the ping pong one.
I always wanted a horse.

Just tried the sun and hands one...worked. Some colors and interesting patterns. It left me with the sensation of looking at ripples in water after I stopped (with my eyes closed that is).

The hand one really worked. At least for me. The pain went away as soon as I looked at my hand though.

My eyes felt like they were burning slightly after the Youtube video. Yeesh.
This is not a one liner.

This would be one of of the funnest things to do, in the days ahead, mainly at college when I am bored spitless