Keep a wallet with some out of date credit cards and a few 1 dollar bills somewhere obvious.
I too have a laptop that I use everyday and while I keep it out of site if I am going to be away from the boat for any lenght of time it is a pain so I often just leave it on the table. I might build a slide job under the table so that I could put it away in seconds and it would be safe on passage.
I did this in the RV.
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