I don't have a
greenhouse yet, so the things I want to put there to extend my zone are currently in the house. Turmeric, ginger and lemon grass are in here right now. I also end up with random tomato plants started off cuttings, to hold over to start early next year (this year's batch just got cut two days ago.) And sweet potato vines for winter greens, decor, and slips for next year. I tend to pick up plants cheap this time of year, and leave them in the house till spring. Give me a month, my list in the house will be longer :)
And somewhere on Permies I recall a
thread on figs that people move in and out for winter.