Here is computer mouse with a spy camera inside that lets you record all activity at your place. The Lawmate PV-MU10 has 720p video resolution and lasts for days on standby mode. The PVMU10 uses a passive infrared sensor to detect movement and start recording. This smart mouse works with memory cards up to 16GB.
This spy camera has a 66-degree angle of view and 5MP CMOS sensor. Costs under $300 at this time.