On the software side I'd have to say it's the office suite. Doesn't matter to me if it's using MS Office at work, OpenOffice at home, or any other office suite product really, they all do the same thing to me for how I use them.
On the hardware side, I think printers have come to the point where they are pretty much toasters, unless you're getting some big industrialized model that has sorting and colating and stapling etc, or for special professional printing, they're all just the same to me. I'd have to agree with the people who say thumb drives. I don't really care about the speed of thumb drives, they're all small, easily used, and are tons times faster and more storage than diskettes ever were. 😉