not building as such reusing old spare parts have got an old apu and ram/mb and psu i dont use (only thing i dont have a spare of is a case) and since moving house into a very rural location i think cctv would be wise investment and has looking to use ip cameras and the reason i want to store it in the loft is simply ease of cable runs, i have quite large overhangs on the roof so the cables can come straight down from the roof to their desired locations and still be inaccessible to most unless they bring a 25 foot ladder with them.