It’s not a free-for-all, though. If the warrant is for a stolen car, the police can’t open up pill bottles during the search; they have to look in places where a stolen car could be hidden ( https://www.fletc.gov/audio/execution-search-warrant-i-mp3 , do a text search for “elephant”). And the things being seized have to be obvious contraband ( https://www.rothdavies.com/criminal-defense/frequently-asked... ).