How old is your LO and how much/what kind of play do they do unsupervised?

LO is almost 2.5 and he doesn't do much of anything unsupervised. He will occasionally go into his room while we are in the living room, but it always makes me nervous when he's super quiet in there, so he's never unsupervised for more than a minute or two!

I remember riding my bike around the neighborhood with just my brother when I was 5 or 6! I felt like we played in the yard mostly unsupervised at that age too.

What about your LO? How does it compare to your childhood?