Other materials have sometimes been used but it is not common. I have only two examples here.
Wood is a suprisingly unused material and thus far I can only find this one example. I believe the value was only good for the event issued, but it has all the markings of a collectors piece. Date, value, land, and event name. This coin is somewhat uncommon.
Aeston states that 1000 were originally minted, and about
1/3 of them have been slowly released over the past 2 years. They were
originally released the summer before Feast of Leviathan 3. They are
backed by food from The Pen and Sword Tavern (Aeston's Tavern in Griffindor)
which basically means people are able to use them for
While technically a Tin The Valkyrie Coins are unlike other tins in that they are not based on Old Gold material. The orinal issued gold and silver shown here are still accepted as one gold in our standard economy, but they get increasingly rarer because of the flimsyness of material. Originally backed by a group of Hobbits , comic books and Magic cards were the commodity used to back them. Today they have a fairly good collectors value and could be the most flimsy coin ever issued.Calibane SilverStein and Rowan were the original minters.