Helena has figured something out. I'm not sure exactly what, but there was a definite lightbulb moment earlier this week that triggered some odd behaviour.
Weird experiments for toddlers:
Sight (or lack thereof)
Close your eyes.
Really, really squinty tight.
Variation 1 – Find your way to Mama, guided only by her voice.
Variation 2 – Spin round and round and round. Try to determine your orientation in the room by flailing your arms about wildly.
Sound (or distortion thereof)
Put your hands over your ears.
Take them away.
Now put them back.
Raise your volume. As loud as you can go.