We used to have a 65L plastic storage bucket, but lined it with an old bed sheet, and then the lego poured on top.
This means that when the kids want to play, you can lift the entire collection out of the bucket with the sheet, then lay the sheet on the floor.
When they're finished, you pick the sheet up by the corners, and place the thing back into the box. We rarely had orphan parts flying around the house because the sheet both gave the kids a defined "play" area, as well as a much more convenient way to handle a large amount of bricks.
This is genius. I't obvious it's genius because it's so obvious. Once it's said you know it's just the solution you wish you had thought of yourself years ago because it's so obvious and would have saved you so much trouble. That is the true hallmark of genius.
As a father of a few children with multiple bins of lego, thank you.
My bricks were in a circular denim sheet, that pulled closed into a bag by tightening a string that was threaded through eyelets along the perimeter. I believe it was even Lego branded.
This is exactly what I had as a kid, after too many incidents of my father encountering loose Lego bricks on the way to refill the woodstove in the dead of night
This means that when the kids want to play, you can lift the entire collection out of the bucket with the sheet, then lay the sheet on the floor.
When they're finished, you pick the sheet up by the corners, and place the thing back into the box. We rarely had orphan parts flying around the house because the sheet both gave the kids a defined "play" area, as well as a much more convenient way to handle a large amount of bricks.