sealable (credit/debit) card box
thingiverse
store and seal the credit card - seal it - it's still available for emergency, but you can check if the seal is broken! up to 3 cards for the seal: https://www.aliexpress.com/w/wholesale-lead-seal-kit.html?catId=0&initiative_id=AS_20230415082632&SearchText=lead+seal+kit&spm=a2g0o.home.1000002.0 get a wire and some seals - it looks more official sealed like that :)
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