The "most wanted" list is a good idea.
I have the same policy of planting whenever I disturb the soil. I carry a basket with tools, gloves and a variety of veg seeds clover seeds and garlic cloves in it around as I go. I fancy myself becoming a cross between
Sepp Holzer (planting many different seeds everywhere) and
Ruth Stout (relaxed attitude of bounty, charming basket)
Having a store of various seeds for gardeners to strew as they work is nice.