sometimes i'm really organized .... i go out back with my large market basket filled with glass jars & caps, paper and a pen/pencil. then i can write down what the seed is, and put the slip of paper in the jar.
sometimes, when i'm pilfering - i only have baggies, and hopefully i can recall what is in the bag. Have gotten some NoIDs that way. Thankfully - some seeds are obvious, but lets take Cosmos for example... is it Cosmic Orange, or Sensation Mix. I even have some cute lil Limara Lemon this year. Will definitely have to have the pencil on hand -- but i do think the seeds are smaller.
the other one that usually gets me are the Agastaches. I have so many. I usually have to find the plant tag to see which is which.
but -- it's one thing i love about Fall.... it's like, "Let the games begin"