Pens - Pens are a very cost effective way to get your name out there for just a few cents a piece.
Mugs - These make great employee and client gifts. They will see your logo every morning.
Calendars - Promote your business every day of the year with a custom calendar. You can get them nearly any size and with magnets for the fridge as well.
Flash Drives - The best thing about these is the fact that you can add data to the flash drive. A catalog, app or any number of things can be added for you customers convenience.