Storing money under your mattress is way safer than investing in stocks. Of course it won't grow that way, but you won't lose any of it either. Not unless someone steals it of course, but the police actually arrest those types of criminals, not the ones who steal your mishandled investments.
Now if you have enough coinage to make your mattress all uneven you might want to think about a different place to store your riches. Well, would you look at that, I just happen to have to viable alternatives right here courtesy of Jeremyville and Kidrobot. Each of these banks stands 10 inches tall and will retail for $100 each when they go on sale this Friday, March 4th at www.kidrobot.com.
By the way, these were expertly produced by the folks at Bigshot Toyworks. Give them a buzz when you're ready to make your own figures.