Choose defined categories
Outerwear or sports gear are more manageable than 'everything seasonal.'
Inspect before storage
Damaged items are easier to decide on before they disappear for months.
Label the return season
Season and year make older bins easier to identify.
Swap rather than add
Move the outgoing season out of prime storage before bringing the next one in.
Practical boundary. Measure first, respect product load limits, and do not improvise wall, ceiling or overhead installations when the structure or appropriate hardware is uncertain.