locations

scientest outfit - the hat, top and bottom can be found in containers at crashed spaceships. they can also be found in apex lab style buildings within containers

pirate outfit - the hat, top, bottom and back can be found either in containers or from drops from the crew, the captian has a high chance of dropping pieces of this set

cowboy outfit - the hat, top and bottom can be found either in containers or from drops from the crew, the captian has a high chance of dropping pieces of this set

wedding dress - the hat, top and bottom can be found in glitch castles as either drops or container loot

mages robes - the hat, top, bottom and back can be found in chests in glitch castles. the hat can also be bought from a glitch mage shop

crown - the crown is a drop from the king of glitch castles
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During Christmas small and big unusual boxes will sometimes drop candy cane weapons, roughly 1% of drops. The "Christmas spirit" drop off all enemies can be used to craft these at the toymaker's
table - (Sliencer)

Venetian Mask - Old Chest found randomly

Tutu - Old Chest found randomly

Armoured Trousers - Old Chest found randomly

Hard Hat - Old Chest found randomly

Dinosaur Hat - Old Chest found randomly

Phrygian Cap - Old Chest found randomly

Ushanka - Old Chest found randomly

Fancy Hat - Snowman found on Snow Planets

Mask - Old Chest found randomly

Cardboard Hat - Old Chest found randomly
- (leeevog)

Pilot's Trousers - Old chest found randomly