OK, what is your goal for the different articles? i.e. social sharing, ranking for particular keywords, attracting links, or something else?
Once you know the goal of particular articles you can think about how to write them to achieve those goals (noting you may want to do all the goals suggested above, just focus on one goal per article).
So lets go through some suggested titles:
Social sharing: 10 Pieces of Furniture you couldn't do without. No. 7 will blow your mind!
Keyword ranking (more natural traffic) - How to clean red wine off your settee.
Links - More detailed articles that go in more depth than the other articles, often helpful but could involve ideas from the other articles so something like - "How to know you are paying the right price for your furniture"
Whatever you do when ranking for keywords, is check out the competition and make sure your article is better, so looks nice, contains better information, and is more helpful. For more ideas, just check out what your competition is writing about, and take some ideas and just make the articles 10 times better bringing in more \ different concepts and information so it is totally original.