Word for the day: lagniappe

“We picked up one excellent word – a word worth traveling to New Orleans to get; a nice limber, expressive, handy word – ‘Lagniappe.’ They pronounce it lanny-yap. […] When a child or a servant buys something in a shop – or even the mayor or governor, for aught I know – he finishes the operation by saying, – ‘Give me something for lagniappe.’ The shopman always responds; gives the child a bit of liquorice-root; […]”: Mark Twain, Life on the Mississippi (1883)

I recently sent an incidental small gift to a friend in New Orleans.  He replied with thanks for the "lagniappe," so of course I had to look that up.  Here are the essentials, courtesy of Wiktionary:

Definition: (chiefly Louisiana, Mississippi, Trinidad and Tobago) An extra or unexpected gift or benefit, such as that given to customers when they purchase something. 

Synonyms: (chiefly Southern US) brotus, (South Africa) pasella, (Ireland) tilly

Etymology: From Cajun French lagniappe, from Spanish la ñapa, a variant of yapa (“small gift or additional quantity given to a valued customer”), from Quechua yapa (“addition, increase, supplement; lagniappe”), yapay (“to add, to increase”).

I thought that might be my first English word of Quechua origin, but a quick check reveals there are many more, including ayahuasca, cocaine, guano, jerk/jerky, pampas, pique, poncho, puma, quinine, quinoa, vicuna, and the place names Andes, Chile, Cuzco, Machu Picchu, and Peru.