There is nothing bad about colour /29, /30, /129, /WW. I like it as long as it is not installed in the bathroom in the mirror cabinet blasting its light into your face while you are about to wake up and looking into the mirror… 

This colour is the best for workshops, and street lighting. Here in many cities the halo- warmwhite colour was used for that application.

He probably wouldn't have done it if his dad had been home... 

Luckily they were on holiday at the time, and we got another piece! 

What did your mate's dad do to him..? 

I remember my school mate Alistair putting some in a plastic Coke bottle containing vinegar, in his dad’s shed one weekend!
He put a pea sized lump in, then screwed the lid on tightly………

……..it blew the window out of the shed! 

Yeah, it was interesting..! Got it round ok though, put all the passengers on the next bus and limped it back to the garage, fortunately it was only a couple of miles away.

What, not even any kids..? 

Fortunately there was no wildlife in the swimming pool... 

I've got a lovely big chunk of Na that's sitting happily in a container of oil but I am planning on demonstrating the reaction to my daughter later this year by dropping a piece of it into the river from a bridge one evening when the river is fast flowing. I don't feel comfortable making NaOH when the river is not fast flowing as I have no intention of harming any wildlife.

https://cen.acs.org/articles/93/web/2015/01/Sodium-Potassium-Really-Explode-Water.html