Permissible and impermissible items of trade

Q: I am a young mom and don't work because of my little one. My husband isn't earning much so I recently started a business from home to at least fullfil my own needs. I sell online women's western clothes like skirts, cropped tops, jeans, etc.

I invested some money in it (my small savings I had) but the other day a thought came to my mind if it's halaal to sell such kind of clothes. Having said that most of my customers are Christians. Can you please help me if it's okay to sell such clothes to non-Muslim women?

Q: Can one sell wigs, fake nails and fake eyelashes?

Q: Since eggs can be bought from people who keep free range chickens, won't it be haraam to buy eggs from the shops who get the eggs from the big companies who keep the poor chickens in small boxes their whole life and they keep them very opressively?

Q: Are we allowed to sell pig feed?

Q: Is it permissible to sell water in the following scenario: you have a private meter for your municipal water and you sell this water to your neighbours and tenants at a higher price than what the municipality is charging you?

Q:

1. Is it permitted to sell books authored by Salafis? This is specific regard to books on Hadith and Aqeedah.

2. What is the status of the income earned?

3. Is there a difference in selling to Ulama and non-'Ulama?

4. If a person sells Salafi authored books, does this count as a compromise in Usul/Aqeedah?

Q: A new virtual world like the real world has been created and I think it's called metaverse. On the virtual earth, we are allowed to buy properties and plots of lands or famous landmarks around the world. We can even buy Makkah and Madina. Thus we will be the owner of those places in the virtual world. You can sell it later at higher prices.

Are we allowed to do such purchase properties that are virtual, non-tangible with real money?

Q:

1. Is it permissible for an engineer to design the structure (i.e. steel in beams, columns, etc.) of a building which the owners will use for producing alcohol?

2. Is it permissible for an engineer to design the structure of a church?

3. Is it permissible to sell grapes to someone who will use it for making wine?

Q: I want to start a vegetable business. Can we sell both non organic and organic vegeatables or only organic vegetables?

Also, can we sell chickens and egg without hens getting chemicals or injections in the body or do we have to sell organic only?

Q: As we have to buy products like sunscreens and medicine even from the non Muslims (if the ingredients are halaal), they sometimes put crosses on the packaging.For instance, a sunscreen package may have a cross, the same goes for some medicines or patches.

Is it considered haraam for us to buy such medicine or sunscreens if the packaging has a cross?