I managed to knock off two wiper end caps while cleaning the car today. I found one amongst the gravel but decided it was time to come up with something better. Here is my second attempt compared to the standard item. The idea was to make them longer so they didn't twist off so easily. I'll see how they stay on and I may make the end less domed.

[Linked Image]

"this means the end of the horse-drawn Zeppelin!" - N Seagoon