The first is a Dracaena fragrans AKA corn plant. The second is Epipremnum AKA Pothos. The third looks like a Philodendron of some kind, there are hundreds. Commonly discussed plants here. Why in the world would anyone discard these? The D. marginata not pictured - you could just cut off whatever top part(s) you like and it should root that way. Unless it's gotten too cold, no reason to expect it to not do well especially if it looks as good as these plants. You can also propagate the top(s) of the corn plant if you want to. One or two new tops should appear at the cut on the mama, give the severed top a pot big enough pot to hold it up, or in the pot with the mama. I would repot that when convenient. Eggshells belong in the compost first, IMO. Would be interesting to know what deficiency or malady they were intended to battle... there's some teeth to some of these kinds of things, some are just old wives' tales... This tree's a mostly-shade plant in summer but may need some direct light inside for winter. I'm a huge fan of growing vines UP instead of down if there's a reason to (juvenile/mature leaf forms is one that applies to the Pothos) and don't know what the goal of the tomato cage support was, but that could have had something to do with it. You can keep supporting it, or let it dangle. Not picky about sun, but can't handle mid-day sun in the summer. Famous for surviving low light but doesn't grow as quickly that way. Very easy to propagate. Philo, similar to Pothos, although some Philos will make really long, stringy aerial roots (which may be possible also for Pothos but not something I've seen.) New leaves are often a different color initially. Probably guttates. Direct sun may burn it in the summer.

tulips

ines_99: Mine certainly gets higher light levels: It receives a full day's sun and is on the edge of a baking curb near the street to boot. The color may well be a response to its stressful situation, but it doesn't look stressed to me. Dave: Lucky me, it was here when I moved in. I've never done anything to it; it's been left completely alone. It's near a Laceleaf Maple that I often forget about and water at odd intervals in the summer, and so may get splashed, but otherwise I don't even water it. It doesn't spread vigorously like the other sedum in my yard. It's been growing very slowly, quietly and unobtrusively. Of course, it's the one that I wouldn't mind spreading like wildfire. :-) I often walk out to the curb just to stand and stare down at my happy little pastel rainbow. I'm sure the neighbors think I'm nuts. :-)

Yes, that's important. I can count on my fingers the only times I have ever had to pull a chemical out of my arsenal to use on pests outside, and lacebugs on my azaleas (planted across the entire front of my house) were one of them. Those particular lacebugs would have not touched a vegetable plant, however. Soap to the rescue. Sawflies on a rare pine and this time I had to go to carbamil base and be extraordinarily careful as it was near my bees. And hort oil on a large planting of purple leaf wintercreeper. Three times out of twenty six years, not bad.