Pure sine wave inverter >= 600W (Samlex is good)
Two 6v deep cycle batteries. Lowes has the Deka GC15 6v, 230Ah battery for $144 with free shipping to the store — an excellent deal.
Solenoid battery isolator
Wiring to connect alternator to isolator and isolator to battery bank
PowerPole connectors for running 12v accessories directly from battery bank