People have enjoyed making or constructing languages (sometimes known as conlangs) for various reasons for centuries. The first was (probably) Lingua Ignota, recorded in the 12th century by St. Hildegard of Bingen, one of the most recent Toki Pona and the most well-known is esperanto. Along the way we also have Quenya and Sindarin (invented by Tolkien and as spoken by elves), Klingon ...