HAVE: Egyptian Walking Onion Starts
Walking onions are perennial scallion onions that reseed by putting out bulbils on their scapes. So, they reproduce by setting seeds from their heads which fall over and get buried in the surrounding soil and make more onions without having to plant them again and again. Hardy zones 3 to 9.
Exchange for some food seed/plant thing. Tomatoes I have 300 heirloom varieties, peppers too, eggplants are yuck.