At work I have to update the firmware and software of many devices. The upgrade files are small and the hardware doesn't like big flash drives. They're the perfect size (in terms of storage capacity) and allow me to upgrade multiple parts at once, cutting my time significantly.
Kingston DataTraveler SE9 32GB USB 2.0 Flash Drive for Reliable Data Storage (DTSE9H/32GBZ)
69 Review
Titan Gray Samsung BAR Plus 256GB USB 3.1 Flash Drive (MUF-256BE4/AM) with Up to 400MB/s Transfer Speed
69 Review
Samsung BAR Plus 128GB - High-Speed USB 3.1 Flash Drive Titan Gray (MUF-128BE4/AM)
67 Review
32GB SanDisk USB Flash Drive (SDCZ430-032G-A46)
78 Review
18 TB External HDD Western Digital WD Elements Desktop, USB 3.0, black
95 Review
2 TB External HDD ADATA DashDrive Durable HD650, USB 3.2 Gen 1, Blue
55 Review
Shock-Resistant Transcend StoreJet 25M3 USB 3.1 Slim Portable Hard Drive with 500GB Capacity
99 Review
2 TB External HDD Western Digital WD Elements Portable (WDBU), USB 3.0, black
84 Review