Plug & Pop is the name given by LG for the app bar that appears onscreen when plugging in headphones or a USB cable on the stock ROM. It contains 4 customizable apps that you can launch. It's a nifty addition but I wonder if it can be implemented as a user app.
LG P500 Optimus One - CM9 - given away
Samsung i8190 Galaxy S3 mini - stock 4.1.2 rooted - given away
LY-F1 - stock 4.1.1 rooted - Retired
HTC TyTn II - Windows Mobile 6.5
LG D802 G2 - CloudyStock 2.5 + Dorimanx kernel 7.8
GoClever Terra 70 - stock 4.1.1 rooted