/r/Pareidolia: Pictures of things that look like other things. - Pictures of things that are recognizable as other objects. For example, a picture of a cloud that happens to look like a whale sword fighting a leprechaun. - August 25, 2022 - 05:16
/r/MachinePorn: MachinePorn: I think my driveshaft just got torqued. - High quality images of machines and machinery. - August 24, 2022 - 21:56
/r/EngineeringPorn: Engineering Porn - August 24, 2022 - 16:07
/r/toolgifs: Tool Gifs - Tool, machine, and manufacturing gifs. Sometimes entertaining, always educational. - August 24, 2022 - 16:06