Whether you work from home or in a large office, it is important that you make your work space personal to you. We spend most of our waking lives in the office so it must make us feel happy, creative and reflect our passions. Remember... your office doesn't have to be white washed walls with a boring white shelf... make it the best place to be, not the worst; And if you work for a big firm, then tell you boss it's time for an office makeover... Use the line, "I feel that the office doesn't reflect the company brand or show what a great and exciting company we are." hehehe. That might just work to encourage your boss to create a space you will love working in. Good luck ;)
Here are a few work spaces that I adore at the moment. I hope they inspire you.
1, 2, 3, 4, 5, 6, 7, 8