Previous deep dives, in no particular order

Pavement markers:Cigarettes:Fire hydrants:Explosive bolts:Paper clips:Water towers:Zippo lighters:Ballpoint pens:Ketchup:Smoke detectors:9mm ammunition:Silica gel do not eat:Cans and can openers:Communion bread:Matches:Scotch whisky:Highway signs:Popcorn:Ice:Olive oil:Emergency position-indicating radio beacons:Baseballs:Beer cans:Eggnog:McDonald's French fries:Crayons:Salt:Duct tape:Bic lighters:Swiss Army Knives:Mason jars: