Looking at different types of new/creative investing sources, Authentic Vegas Casno chips

Looking at different types of new/creative investing sources, and I came across authentic casino poker chips as a form of money vehicle that you can cash in at face value or auction off to collectors for a higher value. Question,, does anyone know or have a listing of casinos that you can buy the casino chips directly from at the cashers window of the casino. I have read in blogs that you could do that at face value. Again I'm just brain storming looking at anything and everything that can make and possibly others a decent profit or a safe way to store money until you want to cash it out.