What Are These Things I Keep Seeing On Nearly All The London Bus Stops In My Area?

“It’s potato art… And I’m not even kidding… The artist is unknown (some say by an artist called NoNose), if you look for ‘London bus stop potato art’ you can find many more articles written about it.” – Reddit / eltonnovs
Mostly Concerned About Why Is This Thing?

“Typically to perform medical services on them or attend to their hooves.” – Reddit / jackrats
“Smaller ones exist for other livestock. For small sheep, that’s how some of them have their hooves trimmed – they come up the run, into the machine, get flipped and manicured (and usually vaccinated with 5-in-1) checked, and then sent out! Though I imagine for a cow it’s a hell of a lot scarier!” – Ceredwyn Ealanta
Found In Deep Creek Md. What Is This Thing?

“Stonefly larvae. Good sign for the water quality.” – Reddit / AlbaWest
What Is This Thing In My Classroom? Makes Subtle Fan-Like Sounds And Changes Colour On Top

“AV1 is a personal avatar for children suffering from long-term illness, helping them to continue their education and maintain the normality of daily life despite no longer being able to access mainstream education. Through an app, the user can remotely log into the class from their home or hospital. Looking through the robots eyes, the child can watch the lesson, through the robot’s ears they can hear greetings from their friends and they can speak through the robot to interact with the rest of the class.” – Reddit / SeldomCrises
What Are These for in an Outdoor Area of a Hospital?

“These are emergency showers. An affected person (chemical spills, laboratory mishaps, etc) will pull the level on the top and tepid water (OSHA defined between 60F and 100F) will douse the affected from the shower head (above) and boot sprayer (below). The duration of these showers is required to be 15 full minutes at approximately 20 PSI.
Source: I design these systems” – Reddit / brisket_curd_daddy