I don't have a problem concentrating no matter what's going on. Wrote when I had five kids and lived in a small house, wrote when I babysat grandkids.
I surround myself with books and art to help me concentrate.
I do all my writing in the den of my home. Often, I play soft, instrumental music in the background when I write.
I prefer quiet and or soft music that I don't have to pay attention to. Just the sound of music in the background helps me concentrate more on what I am doing. But actually, when I start writing, I am in a world of my own.
paper, pencils and morning quiet.
My sexuality. That's all. There's nothing material. Put all your sexuality into your story and it'll be a spectacular literary masterpiece. Or, a conjunctive sewer of spicy shit. Whatever, sexuality will be your silver chalice to success.
I take my laptop to the nearest coffee shop, wine bar or hotel and that gives me the atmosphere I need.
I surround myself with photographs, and other items related to the story or the era of the story to help keep me focused on where I want the story to go.
My laptop is on my patio so that I can always walk into my kitchen for a cup of coffee while I think over the next bit of conversation for my novel or that "certain" word for a piece of poetry.
A big window where I can enjoy the outdoor view. I also need quietness and a peaceful setting.
Quiet office, seascape pictures, fireplace and books are about it.
I have my dictionary, thesauras, and other grammer books. I pray before I start and listen to music sometimes while I write.
I work best in front of a computer with my books and notes. Music is fine but not necessary.
I have an office in my home that is large enough to contain my computer, favorite books, a comfortable chair to read or relax in, a TV that has a built-in DVD player. I also have several personal items that serve as inspirations.