Corporate Identity, Logo, Business Card, Invoice, Letterhead

I am looking for the design of a logo, business card, invoice and letterhead for a company name recently registered. The design of the logo and associated stationary will be simple and clean. I already have a few ideas on the logo, none of which are overly complicated and should be simple to design. At this stage i'm thinking of either a thought bubble or a column graph logo followed by the company name. Colors will be basic e.g. primary or web 2.0 style.