If you’ve got an EyeToy like this for your PS2, did you know you can also get it running on a PC too as a webcam? All you need is the right drivers, and here’s a guide to getting and installing some for the job:
http://www.norbiesworld.co.uk/Knowledge_Base/op=show/kid=21.html

Edit: Seems norbies has gone now :-(. See comments for alternatives.

There’s also an archived version though I doubt the download will work. Don’t really have the bandwidth to host it myself (if I’ve still got it, not sure).

Click here for archive.org’s archived copy

Update: For 64bit users, I’ve found the drivers at last – Sony / Logitech PS2 EyeToy drivers for Windows 64 bit