I took this picture during my morning ferry commute along the Thames. As you can see, it's raining. (It rains in London a lot.)

I'm standing where the passengers get off the boat. The ferry was designed with a drainpipe to funnel rainwater off of the boat, but the water lands on passengers as they disembark. I guess the designers were thinking more about the boat than the people on it.

Conveniently, there is also a Costa coffee shop on the boat. So someone removed the base of a paper coffee cup, and stuck the cup on the pipe. This small fix extended the drainpipe, keeping the passengers dry. Brilliant.