I love the idea of using metal filing cabinets; they really can be a game changer for larger tools. Another useful tip is to incorporate a tool chest with drawers for smaller hand tools, which keeps them organized and protected from dust. For rust prevention, using a mixture of vinegar and baking soda can help clean tools before storing them, and applying a rust-inhibiting oil afterward is a solid routine. Also, consider adding a small fan in your shed to improve airflow and further reduce humidity levels, which can really help keep everything dry and rust-free.