I'll give you two guesses as to how I chose to organize my seed packets, but you'll only need one.
Unless you're brand spanking new here, you'll know that I'm in love with my binder system, so it should come as no surprise that I repurposed an old cookbook binder into a new seeding binder.
a quart sized mason jar in the refrigerator to keep them fresh. I notated these and filed that sheet of paper under the appropriate date.
It's simple and will do the trick.