My son recently broke the string on the light cord in the bathroom. I opened it up in perhaps the naive expectation that someone would have designed that in such a way that the string can be reattached. Sadly it wasn't.

In fact when you open the interior plastic piece the whole thing springs apart and everything from the clicking mechanism to the electrical terminals explode in different directions.

Thankfully, someone had uploaded a video of a very similar switch and, after a few cross words (man I hate assembling mechanisms with springs), I had a new overhand knot in the string and all of the contacts, springs and terminals back in place.

I would, without doubt, drive down to a shop and buy a new one next time...