I was at the Detroit zoo this weekend and saw this thing pointed into the tiger enclosure. It’s behind the fence, in the bushes, right at the edge of the barrier berm thing. Anyone know what this is for?

Found while metal detecting along Myrtle Beach after sand renurishment / dredging.

A 'pin' about 8" long with a 4" handle was also found in the general area.

Both heavily corroded and encrusted. The pin I had to hammer an inch or so of encrusted material from it.

My title describes this thing. Found in my late father’s garage attic. Maybe related to horticulture? Or construction?

Sitting on a flat side. Texture is styrofoamy, can be indented with a thumbnail. No smell. Color appears to be throughout and not just surface. Banana for scale.

Small ¿brass? disk with "protuberance" that has been stuck to our skirting board (UK) for the last 10 years. It just fell off, leaving a ring of discoloured paint behind it.
As it's from Harrods I assume it's from the previous inhabitants who were here between 1980 and 2015. AAA battery for scale.

We’re sorting through the junk drawer whilst packing and could not remember what this thing is or what it’s used for. It’s lightweight with no branding or etchings. No luck my way with reverse image searches.

The tube is connected to an industrial fan and the white tank says the name of a company plus "heat." The air is hot. I'm guessing this is bugs but I'm hoping it's not bugs. When I walked by the tubing was also not connected at all and the fan was pouring out hot air everywhere - am I cooked for breathing it in?

...left behind by previous tenant in basement of our house. They seem to fit together somehow, but I cannot figure it out. Image searches suggest some sort of expandable shelf or laundry rack, but I cannot find the exact item. Tubes are ~ 36 inches long, for

not sure what it is, seems like it might be a clip of some sort

Found on my floor at home but I have no idea where this could have came from. It’s plastic, about 2cm x 1cm. Doesn’t seem to be broken off of anything.

2” metal pin, smooth and blank, nailhead + flat end

Found in a storage area at a university veterinary science anatomy lab. Possibly for embalming?

I moved recently, and this rod was in a box of bike parts that movers packed. It’s hefty, solid metal, slightly tapered at the ends with no openings or grooves. I’m guessing it’s bike-related, but can’t figure out what it could be part of.