What is your toddlers latest fixation?

Lately our 2.5 year old is fascinated/fixated with the radiators in our house, she is both mesmerized/delighted and terrified of them. It’s the first thing she talks about when she gets up and the last thing she mentions before she goes to sleep. Lol also, fans, especially ceiling fans have been a staple fascination for quite awhile.

Wondering what random things other peoples kids are fascinated with? It also makes me wonder what I was like at her age.

TLDR: My Toddler is really interested in radiators and fans, wondering about other people’s kids random fascinations.