From RWP Wiki
Assorted vehicle parts.
Musical Note, Treble Clef
Empty Honeycomb Piece
Vehicle part (List)
Eggs: Blue Egg, Fire Egg, Grenade Egg,
Ice Egg, Clockwork Kazooie Egg,
Rapid-Fire Egg, Proximity Egg, Battery Egg
Feathers: Red Feather, Gold Feather
Turbo Trainers, Wading Boots,
Springy Step Shoes,
Claw Clamber Boots
Stop 'n' Swop
Secret Eggs: Pink, Blue, Cyan, Green, Red, Yellow.
Stop 'n' Swop II
Secret Eggs: Bronze, Silver, Gold.
Vehicle parts are items in Banjo-Kazooie: Nuts & Bolts. They are used by Banjo and Kazooie to build custom vehicles in the game. There are around 100 parts in the game. Vehicle parts are mainly found in Mumbo Crates, bought from Humba Wumba's shop, awarded by Mumbo Jumbo after certain Jiggy totals are reached, awarded by King Jingaling in his Jinjo Bingo game, and awarded by the Lord of Games, after completing a Grunty Challenge.