Tip: Be aware that if you put a coin over a question block, unless you apply this hex edit, it will create an invisible solid block above the ? Block if the block is hit first.
Here's a cloud/sky tileset (since apparently, there aren't enough of those) that includes Mushroom platforms, solid and passable columns, decorations based on Mario items to place on top the columns, arched ledges, Donut Lifts, and a ball for things like platforms on chains to rotate around.
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