Are you like me, tucking away in the freezer some small carefully packed leftover or single schnitzel or fish , and then when it has frozen solid you cannot tell the difference between one item and another? If so, then I suggest you go out and buy a packet of self adhesive labels. or if you have vacant container that would be lovely. You could labels every time you put a package in the freezer stick on one of the labels, writing in ink what is it and also the date. Don't try to put such a label on something already frozen - it won't stick. I also do this with a lot of thinned goods writing the date of purchase as I tend to buy quantities when the particular items I need are on a discount sale.