Probably you remember the "PlayStation Eye", the camera released by Sony for the PS3 with motion controls, as the Wii competitor and I am sure that those who have this "Eye", it is somewhere collecting dust (like mine) . Now you can connect to your PC and use it for whatever you want, even to make vlogs for Youtube.
Let's look at the technical features of the camera
* 4 channel audio input: 16 bits / channel, 48kHz, SNR 90db
* 640 x 480 at 60 frames / second
* 320 x 240 at 120 frames / second
* USB.0 high-speed data transfer
* Uncompressed video (optional JPEG compression)
In short, you can use in your many applications. And if you have not this camera, you can find it for a price even less than $10.
All you need is to download the drivers from here (you have to buy them at **$2.99**, supports Windows XP / 7/8) and install them. When the process is finished, connect the camera to the PC and Windows will normally recognize.
Now the camera is ready for use. Note that so you have a stereo microphone and the camera will not need anything else to make your vlogs.