Can You Produce [?] In Less Than 15 Seconds?

Probably not, but does a wall thermostat that secretly get changed come close?

Something in garage that does not belong there.

Q
 
Petrified wood tree stump, if you'll allow it.

A mechanical device 200 years old.
 
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No.

A book with tipped-in plates? (illustrations separately printed and bound in or pasted to pages of the regular text paper)
 
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