One of the games I own and play periodically is called Evil Genius, and in it you control minions, including scientist minions.
Now in the game, the process of scientific progress and innovation involves said scientist minions wandering around your secret lair and looking for things that can be combined together to create new (and hopefully useful) objects.
This appears to be how Charlotte’s brain is working at the moment, and I’m chuffed to watch it in action. She keeps on picking one thing up, wandering around with it for a while, finding something else, looking at it thoughtfully for a moment, and then either directly hitting it with the first object (which is often a wodden block or plastic spoon) or picking it up and trying to smack the two things together. Recent combinations include aforementioned plastic ball + another plastic ball. Plastic ball + TV. Lid from toilet roll holder + bath toy. Toilet roll + bath tap. Xylohone toy + daddy’s leg. And all of them make good noises (the last combination producing a very satisfying “Ouch” for her efforts), which is an added bonus.