What are some common items found around a house, that enhance plant growth?why?

I have to grow a plant called a sweet pea for biology but I have to add something to enhace it and IDK what to add.

What are some common items found around a house, that enhance plant growth?why?
coffee grounds - source of nitrogen, calcium and magnesium.
Reply:If I were you I would research it online to know what it's natural living conditions are and duplicate them. So, things around the house would be the computer, not directly, and I'm not sure how you'd add something to a plant. You could try adding sugar to water and spraying the foliage or putting the sugar water in the soil, are you using soil? If not you could try that. If you are using soil you could try taking the soil away and growing the sweet pea hydroponically.
Reply:try coffee grounds or banana peels
Reply:Coffee Grounds is the most well know...
Reply:water
Reply:waste material which will decompose and provide rich nutrients for your plant
Reply:I did a science expiriment when I was in like 2nd grade to see if different liquids other than water made plants grow faster. I dont remember the exact results but i do remember that there were other liquids that made marigolds grow faster than water, i used stuff like diet coke, kool aid, milk, and a few others that i cant seem to remember. Im pretty sure i remember the one that i "watered" with milk didnt grow at all. Just an idea, dunno if it will help you though.
Reply:water
Reply:dont know either