My one frustration - there's no such thing as a thesaurus that lists only antonyms. Which can be a little frustrating.
I've never carried dictionaries or thesauruses around, and I've never read them from cover to cover (though I once thought about buying the Complete Oxford English Dictionary, til I saw how much it cost). But as a hyperlexic I have a lot of interests in words, their meanings, and their etymology. I'm also fond of wordplay, and have been told off at work for making abstruse puns in official documents - for example, regarding an enquiry on my area of work, I told the sender that it fell "outside our bailiwick", which can mean authority or jurisdiction, but officially the full title of the place is the Bailiwick of Jersey.
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"Be uncomfortable; be sand, not oil, in the machinery of this world." - Günter Eich (1907-1972)