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If you said “Stop for a few minutes to download and 3D print most of the D&D Monster Manual in order to up the realism of your dungeon crawl” then you made the right choice. You see, a designer named Miguel Zavala has been modeling all of the D&D Monster Manual monsters in 3D and putting them up for all to download. His alphabetical collection features creatures like the Owlbear, the Ettin, and even Tiamat, the many-headed dragon that haunted the dreams of many a Saturday morning cartoon watcher.
All of the models (including, inexplicably, a few Pokemon) are free to download and most are split into multiple printable parts. I, personally, am printing a Beholder right now because, as I recall, I was especially scared of them back in the 1980s when I first cracked open Gygax’s classic tome. It was something about the eye.