Bottom Line: ask your local nurseries if they have leftover seeds. They can't sell them but most seeds will be viable for much longer than the year stamped on the packet.
Snow outside. Seeds on the table. Spring will come. Life is good!
Harvested potatoes leave room in the beds
for lettuces, kale, etc.
Out with the cucumber plants, cherry tomatoes,
peppers, etc., to make room for cool weather crops.
And remember to leave space for garlic in October.