If you have a brick, please list 50 ways to use it .  

I saw an interesting question from a magazine: If you have a brick, please list 50 ways to use it.
for example, you can carry it on the top of your head to train your sence of balance...
I feel it is really hard to list 50 ways, the best record which I know is 30 ways. please just list as more as you can.