your seed packet will finish up square! Aim to collect seeds from annuals. For example, poppies, nasturtiums, pot marigolds, candytuft, love-in-a-mist, poached egg flower, cornflower, morning ...
and put them under my lights for early spring flowers. I know I am not the only person who has packets of seeds from previous years. It is a good time to take a look at your collection.