Personally, if we had a safe we wouldn't keep much money or important documents in it. We have 2 separate lockable pelican cases we store important documents and money in. One is reasonably accessible and would be the one we would open if we were robbed at gunpoint. About $400, an old laptop (backup), spare external hard drives, mostly copies of certain documents, and old licenses etc are kept in it. It appears like our honey hole with just a little bit of honey and mostly spare stuff we could live without. Our other box holds the important stuff and is secured in an extremely hard to reach spot that takes some doing and is not obvious at all. Cash is stashed in many locations, some requiring disassembly of the build to reach.
Same goes for my wallet. I carry the spending cash I expect to use and my driver's license in it but I carry extra cash in other spots concealed on my person. I also separate my van key from all the other keys for hatches, diesel cap, etc. When out of the country no important documents are placed in a backpack as those are prime targets. We became big fans of S hooks and keep several on our packs and Mandi's purse etc. Not only can we hook a shirt, hat or something to the S hook, we use them to clip our straps together through a chair, rail, or whatever when at restaurants etc.That makes a quick grab more cumbersome and the sight and sound of dragging a chair tends to draw attention. We also have a slash proof lockable backpack but it is our least favorite so it is only used as a simple safe when we rent a room or apartment.
In country vs out of country have differences on how we do things but a basic rule is what people see they know you have. Don't stash a fancy camera in the real honey hole. If it's something you use it's something you are willing to part with. A silver laptop looks like most other silver laptops, assuming the brand is the same, so it's easily explained as being the one you were using. A somehow now disappeared high dollar camera or drone won't fool anyone and telling a criminal such will escalate the situation. Even though I carried and always handed over my real driver's license when out of the US, we had back-up one's we purchased under the lost license program. Might not be technically legal in the US but it's essential when overlanding internationally.
All that said, we had no issues. Would I tell you to not prepare, of course not. Thinking situations through is how one builds awareness and keeps a great headspace to prevent placing oneself in a bad situation. The single best security item is one's head...never go against your (or anyone traveling with you) intuition. All this might not be specific to the topic at hand but it's what came to mind, hopefully it's helpful.