Just wanted to share this. These Feng-Shui coins look really cute. Could use them in a board game. Smallest coins are really tiny (only 1.4mm, 0.6mm thick). For 15USD you get 1000 including delivery: http://www.aliexpress.com/item/Free-Shipping-1000Pcs-Lot-Chi... I consider buying it. Larger sizes are available and cost more per coin. You can even get huge 4.8cm coins, but coins of that size are unlikely to be useful in a board game.