Stop 'n Swop
In Act 4 of the fifth level, find the Yellow Jinjo and he'll tell you
"If you Stop what you're doing, and find my Ice Key, I'll Swop it for a Jinjo Token."
This is refering to the Stop 'n Swop feature that was ment to unlock something from Kazooie to Tooie, as the Jinjo would have said "swap", "'n" sound's close to "and", and the Ice Key is one of the legendary stop 'n swop items.
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