If you added front and rare foot mini legs, you could also create a storage rack with this as well that could hold a ton of equipment.
REP fitness sells double-sided shelving for kettle bells, dumbbells, or a flat surface. You can probably put six or more different shelves on it using their modular storage.
Please see the rack photographs to understand what the wing looks like and get inspiration for weight storage, or barbell storage, etc.
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