For those having trouble above:

Level 8: I used a long, big box to connect the two flags, with triangles at each end so the ball couldn't roll off. Another long box above the final flag, with two smaller boxes bolted on to hug the square the flag is on, so the whole assembly doesn't move. After you get the top two flags, delete the box above with A to have it drop towards the flab below.

Level 10: Big pain hehe. What I eventually did was hook together 4 boxes on the square at the top left, so I had attachable surfaces all the way around it. I hooked on a big ol' box extending far out to the right of it to act as a counterweight. Then I made an arm going up and to the left of that area, then made a chain of hinged rectangles connecting to the ball, then extended that chain far to the right. Then I added tons of large ones, with the edges just offscreen to the right. Then I deleted my crane, and let the weight of the chain pull the ball up and over the top left square, and towards the flags to the right. Then I cut the chain, cleaned everything up, and had the top flag already. Easy from there.

Level 24: Chain-and-counterweight works nicely here, too.

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