This Sunday I am doing a 'guest preach' at a church in Fife.  I need to do a 'children's talk' (sic - need to educate them!) and have no idea how many or what age... so here are the bits I have gathered to take along with me.

What's the difference between the fizzy water and all the other items? I know, it's not scientifically accurate, but CO2 will play a small part in the bringing to life of the other objects!!

I wonder what the person covering for me will do for the 'all together' bit...?