Drop down terminals
I have an awful habit of opening new terminals every 2 minutes because I've left something running on the open one or I've left it behind a window on another screen.
As a way to keep them all in once place I've started using a lovely drop down terminal called Guake on Ubuntu. Named after the classic drop down terminal in the game Quake it has tabs, a fullscreen mode, and it toggles on F12.$ sudo apt-get install guake
My Mac-wielding office cohorts seem to think that Visor is a decent alternative for that platform so if you're stuck using one of those pretty shiny things give it a go.