Accelerometers: Analog Devices ADXL202, 2 axix, 2-g accelerometers.
Rate Gyros: Murata Piezo rate gyroscope.  I bought a non-working
Gyropoint mouse on eBay, cheap.  By gutting the mouse and removing
the piezo gyro daughterboard, I have two rate gyros already soldered onto
a board and ready to use.
Tilt Sensors: Nanotron NA-070 electrolytic tilt sensors, 0 –70 degree range.