To make an Amiga laptop would cost about 200-300 depending on how much stuff you have and take a lot time. I also don't know how long it would run from the battery.
To have an Amiga laptop would be cool it wouldn't be useful as my Mac Book Which is why I'm not going to make it just at the moment but if anyone finds the list useful I'd like to see an Amiga laptop one day
Amiga laptop how to
What you need
1 Amiga 600
1 Universal 120W Silent PSU and DC Converter Kit (
http://www.mini-itx.com/store/?c=10)
1 Amiga RGB to VGA Monitor Adapter (
http://amigakit.com/)
High Capacity External Universal Li-ion Battery Pack (
http://www.bixnet.com/unpowbat.html)
(note: any battery will do as long as it gives you the right power output.)
1 15" TFT Screen that takes a 12V power supply
Options ( to make to any good)
1 AMIGA PCMCIA WIRELESS CARD (
http://amigakit.com/)
1 Kickstart 3.1 ROM (
http://amigakit.com/)
1 AmigaOS 3.1(
http://amigakit.com/)
1 Slim line CD-ROM
Follow the instructions from here (
http://www.ianstedman.co.uk/Amiga/amiga_hacks/Amiga_Power_supplies/body_amiga_power_supplies.html) to connect the ATX power supply to your Amiga.
Use the second hard drive connector to connect the monitor power. If its 12V the it should be easy.
Next job is to build a case any way you want.
I suggest putting the main-board on the back of the monitor and then Putting the power supply and battery below the keyboard.
The main-board needs to go behind the monitor due to the keyboard being so thick. You could if you wanted re-wire the keyboard and use smaller keys but its a lot work.