Combined sensor UEXT board.

[onefang]

You have separate sensor boards for temperature, barometric pressure, magnetism, angular motion, linear motion, and light / proximity.  These are all things you might find in a decent phone / tablet, but that's half a dozen UEXT boards, which takes up a rather large amount of space.  You could probably combine the lot, and maybe even add a humidity sensor, into one board that's not large at all.  All the current ones use I2C, so you could just stick all the current designs onto one board.

BTW, in case it's not obvious, I'm talking weather type temperature sensors here, hence the combination with other weather type sensors, not industrial thermocouples.