Sitting, waiting and contemplating

Things that sit there, waiting to be used once, and once only. These objects can sit doing nothing for years and then they come to life to be used. That's it, job done, they are then consigned to the bin to be replaced by another one.

Pure genius!

Ring pull

Staple

Motorway crash barrier

The plastic wrapper on food etc (most of these still need lots of improvement)

Tea bag

Match

My minds gone blank, I can't think of any more.

Aaaaaarrr!