2. The island nation of Niue has coins featuring Disney characters, Star Wars characters, and more.
Located in the middle of the Pacific Ocean and with only about 1,200 residents, the small island nation of Niue is one of the most remote in the world. Although Niue is largely self-governing, it does maintain ties with New Zealand; Niue's ties to New Zealand include having that country's mint create Niue's coins. The Disney coins were released in 2014, and although they are technically worth $25 in Niue's currency, the actual value of the coins is much higher — the rarest of which is a gold coin worth $40,000.
3. Ethiopia still follows a traditional calendar that is seven years behind the rest of the world.
4. Greenland is unable to join FIFA because the ground there can't grow a grass field.
Because of the country's climate, the ground is generally covered in ice or permafrost, making it nearly impossible to grow enough grass to form a regulation-size soccer field. Most games are simply played on dirt/gravel.
(And yes, Greenland is technically not an independent country. ¯\_(ツ)_/¯ )