1. Marijuana coin, Benin
Limited to 999 pieces, this silver coin has become a high yielding asset for collectors.
2. Scent of Paradise coin, Palau
A scratch-and-sniff coin that smells of coconut. A little bit of Malibu in your pocket.
3. Mammoth ivory coin, Ivory Coast
Apparently, it is illegal to use elephant ivory in currency. But the Ivory Coast was so desperate to pun on their name they turned to the fossilised remains of mammoths instead.
4. Egyptian pyramid coin, Isle of Man
The world's first pyramid shaped coin. Hell on pockets.
5. Pop-up Easter Island Moai coin, Cook Islands
Complete with a pop-out moai that sits vertically in the coin. Monumental.
6. Motorcycle coins, Somalia
Born to be wild. And totally impractical.
7. Born Free coins, Sierra Leone
Released to commemorate the birth of Joy Adamson, the author of Born Free, this coin was born to cost $10.
8. Holographic wildlife coins, Togo
Using unique prism techniques, the colours of the animals on these coins flash and change as the coin is moved. Glitzy...
9. Crystal Penguin coin, South Georgia
Perfect for when your assets are frozen.
Have you come across any strange coins or currency on your travels? Tell us about them in the comments below...