Also, the structured planned work we do often fuel their imaginative games. Ds4 refused to wear socks for a while after we learnt about Sparta to prove how tough he is. We have a lot of Romans roamin' around our garden at the moment as that's where we are in history at the moment.
Our rabbit trails often begin in the structured stuff too. Ds6 was playing 'Nobody Knows the Trouble I've Seen' in recorder so we watched Louis Armstrong singing it and then more videos of him and ended up with a jam session.
Sometimes it works the other way. We were at the Botanics in Edinburgh at the weekend and stumbled on the Met Office weather station there so will be making our own soon as school stuff.
Bit of this and a bit of that.