I have biscuit tins stored in the cellar. One each for peas, beans, brassicas, cucurbits, tomatoes, chillies, herbs, flowers, alliums and 'other' (I have a seed problem).
I keep track of what is in each of them by maintaining a seed spreadsheet. I use that to decide what I am going to grow each year and then go and fish them out of the storage tins. I use it to make notes about what was good, what was not, and what won prizes at the show.