The Eee PC is an incredibly portable computer which came out towards the end of last year. It has a 7" - 9" screen and costs just under £200 for the basic model. Hackers decided it was time to add a few modifications to it and have managed to fit in to it a USB hub, GPS Module, Bluetooth, SDHC reader, Wi-Fi, FM transmitter, modem and 2GB of DDR2 memory. That's not a bad amount of stuff crammed inside. No doubt it costs more then £200 to fit all these mods 
Eee PC Upgrade Costs
* USB hubs - 11.20 USD
* GPS module - 36.70 USD
* Bluetooth - 5.65 USD
* SDHC card reader - 6.45 USD
* Adata SDHC 8 GB - 74.50 USD
* Corsair VoyagerGT 4 GB USB drive - 90.94 USD
* Switch + Prototypingboards - 2.66 + 30.10 USD
* Intel Wireless adapter - 62.69 USD
* Airplay FM transmitter - 14.98 USD
* Conexant Modem - 11.89 USD
* Crucial 2 GB DDR2 module - 106.62 USD
For more details check out MightyGadget.