Permissible and impermissible items of trade

Q: Is it permissible to sell rolling paper usually used for weed often known as rizla. And selling lighters to someone you know will used it for smoking?

Q: I have noticed that my father has been selling filter/rolling paper (rizla) in bulk such as in large boxes to possible retail customers. I would just like to know whether it is permissible to sell such an item given the nature of its use?

Q: I would like to know what is the masaail concerning fake goods. As a retailer stocking original goods (which does come with its price tag) finds others selling fake goods matching the originals at a much lower rate. Is it permissible to stock these goods? 

And what is the masaail concerning a person purchasing fake goods because the price is right.

Q: 

1. Are we allowed to manufacture coffin boxes? 

2. Are we allowed to sell coffin boxes?

Q: If a person owned a leather jacket and found out it was made from pig skin, can that jacket be sold to a non-Muslim and the funds be used to purchase another item?

Q: Is it permissible to sell collectable cards, such as soccer cards, Pokémon, etc. Also video games disks, etc.

Q: 

1. I wanted to open a candle making business where I make scented candles and candles using resin and epoxy with pearls and stones for decoration. Is this permissible? 

2. I also wanted to ask that my business will have everything to do with scents so sprays for the house and bamboo stick scents, candle massage oils and I’ll be selling to other companies like Checkers, YuppieChef and event planners to put as centre pieces for weddings. I would also like to do oud bars at weddings for customised weddings. I will also be selling ironing scents. Where, after the clothing is ironed it will be hanged and underneath it the bakhoor spoke will freshen the clothing. All of this will be from my home. 

Please remember me in your special duas, May Allah grant me barakah and Aafiyah.

Q: My brother sells Christmas trees, Christmas related products on which happy Christmas is written and he paid my education fee. 

Will my income be halaal if i use the knowledge as a job or business that I get from my education and can I live in his house that he made from this money? 

Also, he gave me a laptop that he bought from that money and I work on the laptop as a freelancer. I use the Internet on this laptop and he also pays the bill of this Internet from that money. Will my income be halaal that I make from that money?

Q: Is it permissible to sell toys or clothing that are replicas of the original brand but not the original brand itself, if the original brand has copyright protection? 

For example, selling a motorcycle toy replica with the Kawasaki branding on it or selling an Adidas top replica with the Adidas branding on it.

Q: Please advise on whether it's permissible to study a cannabis course and learn about cannabis. 

Also, is it permissible sell cannabis and cannabis products for medicinal use?