In 1932, when a shortage of cash occurred in Tenino, Washington, USA, “notes” were made out of wood for a brief period. The wood notes came in $1, $5 and $10 values.
The world’s largest coins, in size and standard value, were copper plates used in Alaska around 1850. They were about 3 ft (1 metre) long, about 2 ft (half-a-metre) wide, weighed 90 lb (40 kg), and were worth $2,500.
A collector of coins, tokens, and related objects is called a numismatist. A collector of paper money is called a notaphilist. See more what collectors are called.