Trains & grandchildren

Husband & I took two grandchildren over to Didcot railway centre. They're really happy in the car, don't get sick & don't squabble. They sang:

Tic tac toe
Give me high, give me low.
Give me three in a row.
Danny got shot by a UFO

(then you have to do rock-paper-scissors but you don't say anything)

Snaky creepy crawly up your back.
What letter is that?
You lose, get a bruise!

While husband/gran'pa took photos of engines, we explored a newly opened air-raid shelter, then went on the exhibition coach for lots of hands-on experimentation with steam, coal and oxygen.

The photo is of leaves on the line's gravel.