There's a good chance you want an external SSD you can take anywhere, whether it's extra storage for your school projects or backup for your can't-lose work files. Thankfully, you won't have to pay a lot for that extra space. Amazon is selling SanDisk's 1TB Extreme Portable SSD at a new all-time low price of $109, or less than half its official $250 sticker. There are steep discounts for 2TB (now $234) and 4TB ($460) models, too. At those prices, they may be easy choices if you want a speedy yet durable drive.
The SanDisk Extreme Portable SSD is reasonably quick with 1GB/s read and write speeds, but the rugged design is clearly its main appeal. The toughened shell can survive falls from 6.5ft and boasts IP55 dust and water resistance — while you wouldn't want to drop the SSD off a cliff or dunk it in a lake, it can handle the rough-and-tumble of everyday life. A carabiner loop makes it easy to clip the drive to your backpack or camera strap, and optional 256-bit hardware encryption keeps your data more secure.
This isn't the fastest external SSD you'll find, and you won't get perks like a Thunderbolt port (it's 'just' USB-C) or wireless connectivity. With a sale like this, though, those limitations are easier to accept. This is a good deal for any portable SSD, and the improved survivability is just a nice bonus.