Ever wished you could carry your entire Blu-ray collection around on a device smaller than your thumb? Someone at Sandisk apparently did, which explains the company’s prototype flash drive.This unassuming little gizmo doesn’t look that different from any of the blister-packed drives you see in a drugstore checkout line these days. It packs a whopping 1TB of data storage into a chassis that SanDisk says is the world’s smallest.For USB-C flash drives, anyway. There are plenty of smaller drives out there. There are drives with twice the capacity, too… but Sandisk has put together a thumbdrive with a combination of features that’s hard to beat.The USB-C plug, for example, makes it very versatile. You can use the drive with current PCs and Macs as well as numerous Android devices. File transfers will be blazing fast, too, and that’s a very good thing when you want to copy, say, a few hundred movies at a time onto your drive.It’s so slim that you can tuck it just about anywhere. Sure, Kingston’s 2TB Data Traveler Ultimate GT has more room for files, but it’s also an inch thick and can’t be plugged into your phone (at least not without an equally clunky adapter).The flip side, of course, is that you’ll need an adapter if you want to plug Sandisk’s drive into a computer that only has USB-A ports. There’s another strike against SanDisk’s skinny 1TB drive, too: you can’t actually buy it.It’s still in the prototype phase. SanDisk will have similar USB-C drives available soon, but it may be a while before their 1TB model makes it onto store shelves. The price isn’t known yet either. Their 128GB USB-C drive currently goes for around $40… so it could sell for $200 or more.For more CES coverage visit our sister site PC Mag. Let us know what you like about Geek by taking our survey.