Aukey 2.5" USB Hard Drive/SSD Enclosure | $8 | Amazon | Promo code LUWHFLCQ
If you have an old hard drive or SSD lying around, this $8, 2.5" enclosure is a cheap and tool-free way to transform it into a useful external hard drive. Even at that low price, this model supports UASP, which allows for faster data transfer speeds when using it with an SSD.