165. Paper Airplane Icon
Cause I'm leavin' on a paper airplane Don't know when I'll be back again
And... I'm back. That was a quick trip.
The paper airplane icon can be used for a ton of paper-airplane-related activities, or as a send email icon. Fun fact: in Apple mail, the "drafts" icon shows instructions on how to build a paper airplane, and the send mail icon is the final, folded airplane. Example here.