Today Iona seemed to suddenly grasp the concept and the word "in". She'd been playing with her Noah's ark and small animals, and I thought I'd heard her say "in" when putting an animal in it. Later, she got her teddy and tried to cram it into a (smaller) tin, while saying "in". We then spent some time together testing out which toy animals would fit into which containers, with Mummy saying "in" when we put them in, and "out" when we took them out. It's amazing how quickly she's growing!
I''ve also been astounded over the last week or so that when Iona points to her tummy (while saying "tu") she often then signs "food" and says "f". Likewise, just after breakfast today she said and signed food, then pointed to her tummy and said "tu". The really strange part of it is, I don't remember either David or myself ever telling her that food goes into her tummy! I guess we must have done at some point, and that for some reason it's stuck in her brain.