The title of this episode, Leviathan Wakes, is the title of Book 1 in The Expanse series, of which this season of the show is based
The futuristic looking cubes used for cover from the gunfire during the security forces mutiny gun fight on Eros are standard steel-caged IBC Tote water tanks used commonly on professional farms and other industrial applications.
The drugs and medical supplies listed on the vending machine Miller shoots open are: sildenafil (Viagra), mephedrone (a synthetic stimulant similar to amphetamines), methocarbamol (muscle relaxer known as Robaxin), morphine, penicillin, acetylsalicylic acid (aspirin), ibuprofen, insulin, lidocaine (topical anesthetic), dihydrogen monoxide (water), antiparisitic paste, antiseptic solution, synthetic skin, hypodermic needle, condom and tampon.
At multiple times when Jim and Joe are hiding in the pachinko parlor (it's most clear when they're crouching down) sounds from the Atari 2600 version of Donkey Kong can be heard in the background.