It´s been pretty many years. When I was a child I used to build many robots which I saved like that but now they are just legos again.
A few years now
My Girl Loved her Loved her Lego , at all ages
I didn't enjoy treading on it with bare feet lolz that hurts
I did not have Legos when I was a kid but I had something similar called Tinker Toys.
Last week. My nephews and I sat down and built stuff at their sisters birthday party.
A few days. Because, umh, the kids like it
Way back to the 1990s, I guess. God...I miss playing with legos, even without building anything in particular with them.
As long as I could remember, about 35 years
Less than an hour... lol