World's smallest USB flash drive is almost too small
Available in 32GB and 64GB capacities priced at $48 and $89 (£30/£55)respectively, the 5mm USB key can reach speeds of up to 140 MB/s. You'll want to make sure your laptop supports USB 3.0 to get the full speeds. There's a tiny LED activity light to know when the drive is spinning up, too.
The aluminum body is made of one piece which PKparis says is "very strong". A string with a handy carabiner allows you to hold on to it if prefer to carry it. It wouldn't be a hard thing to lose, given its small nature.
We can see this drive working out with a device like a Chromebook with a smaller SSD on board. You could just leave the PKparis plugged in and never notice it again, while enjoying the extra storage benefits.