N1BIOS N1BIOS is a fun little throwback to the days of verbose system startups. It looks really legit and it made everyone I know that is remotely nerdy laugh hysterically. I love it. You, too, can go back in time by downloading it HERE (this one is flashable, so youll install it through recovery). [Source] Robot Arm This one consists of some sort of disembodied mechanical automaton welding the Android logo onto the fabric of space itself. Nice. Get it HERE (non-flashable). [Source] System Startup This bootscreen must have been incredibly involved. Wireframe Andy spinning under some system startup text? Yes. Yes, we approve. Get it HERE (non-flashable).