Unusual and rare objects always seem to be a favorite with collectors; the weirder, the better. The same applies to money. Some currencies don't even look like our regular perception of what money should be, but served as legit cash at some point in history.

The following are the top 10 weirdest currencies the world has seen so far.

 Wooden bills（木質(zhì)鈔票）

Wooden bills may be rough on your wallet, but they were one of the best ways for Germany to rebuild its economy after World War I (1914-1918). When the crucial war caused the German economy to sink into a depression, local governments used almost everything they could find to print "notgeld" (emergency cash) -- including wood, aluminum foil, silk linens and even playing cards -- until the country's central Reichsbank had recovered. Meanwhile, governments realized collectors would buy up these odd currencies, so they were actually hard to circulate.