P-Line (Power-Line) Pigtails come in 2-Packs to configure both ends of a BaseSnake channel---just plug them in and you have a P-Line, and no more nasty AC power cords and strips underfoot. For more, see P-Lines.
P-Lines have standard 2.1mm power connectors (like Boss). For pedals with non-standard connector sizes, see Power Plug Adapters for Pedals and Supplies.