Very bad wood and finish on under stairs press. Need a cheap but good solution.
15 Genius under Stairs Storage Ideas - What to Do With Empty Space ...
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Here are some great under stairs storage ideas https://familyfocusblog.com/storage-under-stairs-impressive-ideas/
Try tension rods for hangers
We made some to store my paints, maybe you could take a similar approach with the shelves cut progressively smaller.