Misplace the two that come with the case, and your case is no longer waterproof.
From the sfgate.com
It's infuriating to misplace any wallet, but I had huge affection for this one.
From the guardian.co.uk
Trying to predict Laker behavior is an excellent way to misplace one's senses.
From the ocregister.com
It's a mixture of an MP3 player and a bracelet, making it mighty hard to misplace.
From the edition.cnn.com
Back in the early 1980s, Rockaway Beach was a scary place to misplace a child.
From the washingtonpost.com
Did the New York Yankees misplace their late-inning magic, or has it just expired?
From the usatoday.com
But you could safely misplace most, if not all, of your other USB charging cables.
From the techcrunch.com
Not only is the cash susceptible to theft, it is easy to misplace or forget about.
From the huffingtonpost.com
Of course, there is always the chance that the airline could misplace your luggage.
From the stltoday.com
More examples
Place (something) where one cannot find it again; "I misplaced my eyeglasses"
Place or position wrongly; put in the wrong position; "misplaced modifiers"
(misplaced) mislaid: lost temporarily; as especially put in an unaccustomed or forgotten place; "the mislaid hat turned up eventually"; "misplaced tickets"
(misplacement) malposition: faulty position
Misplaced is the fifth album by DGM
To put something somewhere and then forget its location; to mislay; To apply one's talents inappropriately; To put something in the wrong location
(misplaced) Uncomfortable, especially due to one's surroundings; Lost; disoriented
(Misplaced) Lost, or in the case of Ontario Locator a place name where existence and location cannot be confirmed