Project ideas

#1

I’ve recently come into possession of a Raspberry Pi and I have half-a-dozen Arduinos (ranging from the Duemilanove to the Mega), has anyone else got an interest in such things and what sort of projects are you working on?
Owing to limited funds (at the present) I’m doing fairly simple things, but I am planning to host a web-server on the Pi (the first thing is to attach a cooling fan, but that’s easy), and from there I am planning to have Pi-Arduino communications for a home security system.
At a playing around level, I want to set up an Arduino to have remote control over a motor connected to a Lego VW Camper-Van model.

I am also looking at making a USB to HDMI adapter that will allow my Raspberry Pi to display on my iPad I currently use a VNC).