This gives you some options on a cold winter's night. http://www.pinterest.com/funconvention/coin-currency-artwork
jloring: Umm, maybe I should post my organizing system that will be cost saving and effective in your case. I am in same shoes as you did, but I think I improved.
OP: I have question with your link. From what we understand that it's illegal to melt coins that hasn't been approved by government. Don't get me wrong, I think it's cool, but I want to know if it's legal? Some pictures did show coins being cut in half or into different shapes to create an art. Is it allow?
I have not studied nor read the law about melting current circulating coins. But as can be seen, people have used coins in an art form without repercussion. Hobo nickels, Repousse coins and love tokens were made in many years prior, and even today, without government intervention. Either they (The government) don't care, or using it as basis for artistic creation, offers some type of shelter or immunity.
Yes - it IS Legal! – U.S. Code Title 18, Chapter 17, Section 331: Prohibits,, among other things, fraudulent alteration and mutilation of coins. This statue does not, however, prohibit the mutilation and defacing of coins if done without fraudulent intent (such as Jewelry) or if the mutilated/defaced coins are not used fraudulently.