Stock photos from Unsplash (free under the Unsplash License, https://unsplash.com/license)
th-cafe-garden.jpg   https://images.unsplash.com/photo-1617676367459-e25e7d90c02a
th-cafe-dusk.jpg     https://images.unsplash.com/photo-1593103511594-9bc31ffde3d3
th-cafe-white.jpg    https://images.unsplash.com/photo-1686881029384-115ce4c94c31
th-cafe-seats.jpg    https://images.unsplash.com/photo-1617676367268-d5598e620246
th-shop-small.jpg    https://images.unsplash.com/photo-1745131763677-94ba59a69654
th-woman-phone.jpg   https://images.unsplash.com/photo-1708010265515-e33ec0aaa6d4
th-woman-smile.jpg   https://images.unsplash.com/photo-1554226761-beb7579ea7fb
th-woman-city.jpg    https://images.unsplash.com/photo-1764681860114-7a8d47059d1e
th-pastry.jpg        https://images.unsplash.com/photo-1784955706786-8ab6c48c88da
photo-milk.jpg       https://images.unsplash.com/photo-1635586506547-4dbe01d7ba5d
photo-gas-flame.jpg  https://images.unsplash.com/photo-1728509741559-44172bcd86b3
photo-camera.jpg     https://images.unsplash.com/photo-1549109926-58f039549485
th-bkk-view.jpg      https://images.unsplash.com/photo-1703080820182-5ed3a6e23b6a

Device photos (examples of how each device looks, not the exact model)
From Unsplash (Unsplash License):
dev-camera.jpg  https://images.unsplash.com/photo-1722488359737-7a9b8a8436c7
dev-gas.jpg     https://images.unsplash.com/photo-1728509741559-44172bcd86b3
dev-smoke.jpg   https://images.unsplash.com/photo-1665655034446-1536f6de3fe6
dev-door.jpg    https://images.unsplash.com/photo-1616307193065-dbcd2f763552
dev-motion.jpg  https://images.unsplash.com/photo-1753039495488-434a2fe53e41
dev-temp.jpg    https://images.unsplash.com/photo-1610389337008-84e005329867
dev-fridge.jpg  https://images.unsplash.com/photo-1645360954716-a0b7a8d45535
dev-meter.jpg   https://images.unsplash.com/photo-1601192711538-a86a212cae12
dev-valve.jpg   https://images.unsplash.com/photo-1773186704394-919b2aa3179a
dev-fan.jpg     https://images.unsplash.com/photo-1652699160837-6471c565b440
dev-siren.jpg   https://images.unsplash.com/photo-1532106753298-e7b431b26dae
dev-router.jpg  https://images.unsplash.com/photo-1606904825846-647eb07f5be2
dev-hub.jpg     https://images.unsplash.com/photo-1752262167753-37a0ec83f614
From Wikimedia Commons:
dev-plug.jpg    "Smart-plug" by TBWABusted, CC BY 2.0, https://commons.wikimedia.org/wiki/File:Smart-plug.jpg
dev-board.jpg   "Top view of an Orange Pi One single-board computer" by Profpcde, CC0, https://commons.wikimedia.org/wiki/File:Top_view_of_an_Orange_Pi_One_single-board_computer.jpg