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    * ASUS wl500-gP wireless router (70 EUR)
    * Canon A590IS + memory card + CHDK (130 EUR)
    * USB connected GPS (with battery?) (100 EUR)
    * USB Flash stick (10 EUR)
    * powered USB2 hub (15 EUR)

    * 30watt 12v to 5v dc-dc converter module SUNPOWER SDS-030A05 (50 EUR)
    * 12V 10Ah LiFePo battery (140 EUR)

    * Arduino microcontroller board (30 EUR)
    * 2x 12-position rotary switch
    * big red pushbutton (with led?)
    * green led, blue led, red led, rgb led
    * 4x 8-segment led bar 
    * 16x diodes
    * 16x 1k resistors

    * power connectors for hub and router
    * power cables
    * on-off switch
    * fuse with holder 

    * bike-mountable box (100 EUR)

Accesories:

    * mains battery charger (50 EUR)

SUM: 695 EUR