I need something more practical ...
Despite your best efforts, your character is in a tight spot. He's surrounded my thugs in a back alley. She knows a kidnapper is inside the house. You know a confrontation is coming and these characters have nothing to defend themselves with ... or do they?
Improvised Weapon - Any object, not immediately associated as a weapon, that is used as a weapon.
When it comes to survival, anything goes. When flight mode turns to fight, any item is better than nothing (unless you know how to use your limbs effectively).
Stephen King's The Mist is a great example. A bunch of people are trapped in a grocery store, forcing them to make weapons out of common, household items.
"I said 'say cheese,' not 'say ah!'"
How about in the woods? Sticks and stones, my friend - whatever it takes to put those Walkers down.
"Rock, Paper, Zombie!"
If you are of the super-human strength persuasion, you could easily turn a car into a pair of boxing gloves.
When it comes to Improvised Weapons, skies the limit. They can be practical, creative, or downright random (which adds a touch of comedic effect). If an action or fight scene is about to happen in a given location, it's good to remember what items are typically in such locations (offices, bars, department stores, etc).
There are more examples than I can summarize, and yet this hasn't entered cliché territory? It's a theory, but it could be that making weapons out of random items, as a last resort, speaks to our core survival instincts.
Either way, this trope often keeps us on our toes!
Have you ever given your character an Improvised Weapon? What kind of object was it?
I'm David, and the pan is mightier than the sword!