WAY more than lego or play dough!
When I turn off my computer screen it's all shiny so I can use it as a mirror. I took out my contacts and left on them on my desk. But then I thought 'what a waste, when they'll get all hard in a few minutes'. So I flattened one out... that was quite cool.
But when I tried to flatten the other one out, it went a little beserk and actually looked really cool. I tried to take some photos but they weren't focussed enough. But then I took some more:
It sort of looks like a flower to me.
And then, when the contacts are COMPLETELY dry, you can chop them all up so they look like shards of glass!