This is a fun way to hide some valuables inside of a calculator in plain sight.
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Step 1: Remove Screws From the Back.
Step 2: Pull the Back Case Off.
Step 3: Secure Items in Place.
Place a small ball of HandiTak reusable adhesive to the back of a key or other similar item you don't want to rattle around.
Step 4: Place Money Inside and Screw Back the Case.
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Safe and Secure Challenge