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https://wowpedia.fandom.com/wiki/Peon_Day?oldid=2333281

On September 30th, goblin vendors arrived in Stormwind City and Orgrimmar. These vendors sold fireworks at discounted prices. The reason? So that everyone might celebrate the day that was saved by the hard work of the mighty peon and the great peasant!

NOTE: Peon Day is only available on European realms.

https://wowpedia.fandom.com/wiki/Holiday_Fireworks_Vendor

A Holiday Fireworks Vendor is an NPC fireworks vendor that sells fireworks during the Midsummer Fire Festival or Peon Day seasonal events (see Notes section.)

There are five Holiday Fireworks Vendors:

Ziggle Sparks <Holiday Fireworks Vendor> in Booty Bay in Stranglethorn Vale
Wizbang Booms <Holiday Fireworks Vendor> outside the gates of Ironforge in Dun Morogh
Lillian Singh <Holiday Fireworks Vendor> in the Trade District of Stormwind City in Elwynn Forest
Kizzak Sparks <Holiday Fireworks Vendor> in Orgrimmar in Durotar
Jaxxil Sparks <Holiday Fireworks Vendor> in Ratchet in The Barrens

https://wowpedia.fandom.com/wiki/Jaxxil_Sparks?oldid=2463784
https://static.wikia.nocookie.net/wowpedia/images/5/5b/Jaxxil_Sparks.jpg/revision/latest?cb=20230704125706

Ziggle Funks
Hexknall Kawumms
Lillian Singh
Kizzak Funks
Jaxxil Funks