Hootenanny

Hootenanny is an Appalachian colloquialism that was used in early twentieth century America as a placeholder name to refer to things whose names were forgotten or unknown. In this usage it was synonymous with thingamajig or whatchamacallit, as in "hand me that hootenanny." Hootenanny was also an old country word for "party". Nowadays the word most commonly refers to a folk-music party with an open mic, at which different performers are welcome to get up and play in front of an audience.