My dad was walking in my UK hometown, and noticed a lady in a wheelchair on her own, holding what looked to be a wheelchair wheel - looking worried.

So, he asked her if everything was ok.

"Not really, my wheel fell off and I don't really know what to do next." She said.

He checked it out and could tell something was missing from the wheel - looked around the area for any screws/bolts etc, couldn't see anything. Asked where she'd come from, she said - just up from my car a short distance away.

He asked if she wanted him to go search the car for the screw/bolt. "Yes please!"

He goes and searches the car. Nothing found.

And then, he defaulted to his dad skills.

"No worries," he said. "There is a hardware shop just over there, I'll figure something out."

And sure enough, he goes to the hardware shop, and conjures up an engineering solution to reattach this wheel using the parts he could find there, comes back, completes the build, and off she goes about her business.