$20 Bluetooth Smart dev kit has five sensors

The WICED Sense development kit is an all-in-one IoT prototyping package that includes the new BCM20737S Bluetooth Smart SoC and five MEMS sensors, along with a Bluetooth 4.1–compatible software stack. The kit allows easy evaluation of new IoT applications. A smartphone application can be downloaded and paired to the kit in a couple of minutes.  

The WICED (Wireless Internet Connectivity for Embedded Devices) package includes a G-sensor (speed/accelerometer), a gyroscope (direction), an E-compass (direction), a barometer, and a humidity/temperature sensor. The device components are certified by the FCC, Conformité Européenne (CE), and TELEC and Secure Over-the-Air download capability. A micro-USB connection enables firmware updates.