Choosing a domain...any ideas?

Ok so i know a fair bit about blogging now (still a newbie though), but i am stumped on choosing a domain name.

I am choosing to promote apple products however i cannot use "apple", "iphone", "ipad" etc in the domain name so i'm having trouble coming up with ideas for the domain and most that i have thought are either taken or are just crap lol.

Can someone give me any ideas for a domain? And does the domain matter too much when it comes down to getting good traffic?

i'd go with something like..

coolaccessories.com/products/ipad/cases

since you can't have it in your main domain, you can at least make sure that the second part of whatever people will search for is in your main domain (ie. accessories, or products, or w/e (haven't done the research myself), and then include ipad or w/e later as a category.

Research the keywords. If you have such a broad niche as apple product, there will be some good keywords with small competition. You can buy a domain name that contains the keywords.
Another idea, you can buy aged domains. Some aged domains contains your keywords and they have a good PR too. This will also make it easier for you when you building backlinks

Thanks for the replies, i'm gonna go do some keyword research then and get some that i can use in the domain