I keep a garden journal, which includes observations, musings, insights and just about whatever seeps out of my brain when I’m propagating, as well as planting in my yard and garden. I scrounged some small sturdy boxes to store stuff in as well.
I often reseed my natives by stripping some of the ripe seed heads in the fall. Some I spread on soil in the yard, and some I save in old medicine pill bottles for future use. I also start some collected seeds in starter pots for transplanting into the garden after they sprout.