well, i planted my first lot of seeds in a tray on saturday and have recorded them thus....
its a 18 hole seed tray and 2 rows if you have the wide side closest to you......oh!, you should know i'm very good at making things as clear as mud

!!....
i've dated and recorded it as column 1 back , column 1 front, then what the seed is and how many....i have 13 single pods with a variety of things.
theres a picture on my blog if you need to make sense of my drivel!.
long term i dont think this will work, but i have to start somewhere and can adjust as time goes on!.