I’ve only done this part once (my first move from family home was into a new build flat so some appliances were built in and everything else was down to me.
When I moved though, the information I was given by estate agent who worked with my sale was built in appliances stay. So in my case at the flat, the fridge/freezer, oven and washing machine were built in and fixed (cupboard doors attached etc) so it was expected that I leave them. Likewise at the home I was purchasing, they left the oven and dishwasher because they were built in - however the fridge, freezer and washing machine were not fixed so they took them with them.
It absolutely never occurred me to ask for money for carpets that I had laid.
Blinds…..trickier. The house I was purchasing from stated they were taking their curtains but leaving the rails so I did the same - I took my curtains because I knew they would fit (they were actually too big for new windows but I got them adjusted). I didn’t charge for rails because I was getting some at the new house left for me.
Will your blinds fit the new home? I guess if not, it’s up to you to decide if you want to ask for some money. If your buyers don’t want them or don’t want to pay, then you can take them with you and reuse, or try and sell, or just leave them there anyway and the new people will either keep or dispose or sell.
so my perspective:
Carpets, no. I think it’s fairly understandable to expect flooring to remain in a house.
Appliances / white goods - if fitted, leave. If not fitted, offer a price to buyers, then either accept or sell or take with you:
Blinds - I’m unsure.