Few things in life are essential. The rest is just trivial. But, as a writer, you need:
Thick skin. For all the times society rejects you.
A place to keep your rejection letters. You can store them in a cool, dry place before burning them in your fireplace.
Notebooks. Napkins just don’t cut it.
A playlist for every occasion. It seems like every scene calls for a different song.
Comfortable clothes. PJs are an absolute must.
A box of tissues. If you’re not crying, your readers aren’t either.
Books on books on books. Because when you’re not writing, you’re reading.
A book deal. Every writer needs one.
Chocolate…and more chocolate. Or candy. Cake even.
A pet of some sort. Pets make better company than people.
May you write the next bestseller and make millions this year.
Herminia Chow 
Yes to all of those. Especially the pets and thick skin… Though the pets help in the comfort zone anyway. 😉
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Yeah, pets are great.
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Nice list with comments! The box of Kleenex got my attention and affirmation. Even though I’m not writing a novel.
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Thanks. Haha, readers also need tissues.
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I have most of the essentials, but you left out a literary mug!
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Oh, good point. I love mugs, especially bookish or literary ones.
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