There's a lot discussed here imo:

https://www.reddit.com/r/BuyItForLife/comments/10qqqd/things_that_are_bifl_due_to_their_ability_to_be/

Many of these have easily replaceable parts and components.

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But my answer outside of that thread would be Victorionox knives. The components that are sturdy won't break. But you can replace just about everything here - and the stuff that isn't listed won't break:

https://www.swissknifeshop.com/collections/swiss-army-knife-replacement-parts-by-victorinox#:~:text=Replace%20your%20missing%20tweezers%20or,working%20order%20in%20no%20time.