Tweetie: a twitter client. The only reason the icon is there is because I can’t find the preference to turn it off.
Dropbox: I use the icon to reference whether or not my downloads / uploads / syncs are done yet.
Bowtie: I’m still not sure if I want to hide this icon or not. It adds so much sophistication to the menu bar.
Airport: kinda important to get connected.
Battery: for some reason, if you hide the battery icon you don’t get the “10 minutes until your battery dies” popup boxes. So I keep the battery icon there.
All of these icons (and more) can be installed with this pack. I’ve long since lost the creator’s URL, apologies for not assigning proper credit to him/her.
(From refrshingapathy)