A USB and micro-SD adapter

This USB flash drive is top notch. Then of course, do not expect very high data rates, but personally, I can well wait 1 or 2 minutes to transfer. The big advantage of this key is that it works with micro-SD card, allowing both to put your cards in to read data (eg micro-SD your smartphone or GoPro camera) but at the same time to change its capacity. It is by default comes with a 4GB card, but I put a 32GB in and it works very well.
It is also very small and therefore does not exceed many USB, which is useful on laptops. This is sometimes a bit annoying by cons to disconnect eg on a stationary PC or PS4, it's hard to catch.