This USB DVR is great option for a video recorder your can carry with you:
Flash Drive Hidden Camera
Micro DVR recorder in a working flash drive. Small and easy to hide. Motion activated.
Another good option for a handheld video recorder (manual activation only) is:
Portable Car Key Hidden Camera With Built-In DVR and Audio
Light as a feather & very small, looks like a car remote. Records video, audio and snapshots.
Or this:
Car Remote Hidden Camera DVR with Motion Activation
Simple push button control - motion activated video and audio, saves to removable SD card, easy PC playback
Here's one with high resolution (not disguised though):
Flash Drive DVR with Audio
Voice or motion activation USB stick records high definition video (1280 x 720)
