Based on the criteria specified previously we chose:

• Microchip MCP1710 3.0V current LDO regulator
• Analog Devices ADXL362 ultralow power 3-axis accelerometer
• Invensense MPU-9250 9-axis motion tracking multi-chip module
• Winbond W25Q256FV 3V 256M-bit SPI Flash memory
• Cypress Perform FM25CL64B 64k-bit SPI Fram memory
• additionally we plan to use MS5611, MS5803 and BMP280 pressure sensors

Smaller parts include:

• 0603 smd components for optimal size vs. soldering difficulty
• 2.0 pitch 2x9 connector sockets for NRF51822 connection
• 6 pin smd socket for external SPI expansion (ex. pressure sensors)
• 21x32mm LiPo battery of around 120mAh
• Tactile smt switch
• cheap Vibration motor 3-4.5V 0.06A