When using various flash drives, hard disks and memory cards, I like to have them with respective custom icons in Finder in place of default image. So I made my own icons for frequently used devices. It’s quite easy to do with iconutil. If you by any chance use the same devices, feel free to download ready icons in macOS .icns format.
Corsair P256 SSD 
Eye-Fi Pro X2 
Generic SD 
LaCie 5big NAS Pro 
LaCie 5big NAS Pro 
LaCie PetiteKey 
Leef Surge 
Lexar Professional CF 64 Gb 
MacBok Air SSD 
SanDisk 64 Gb USB 3.0 
SanDisk Extreme SSD 
SanDisk SDHC Extreme Pro 32 Gb 
Seagate Seven 
Synology DS 1515+ 
WD20NPVX HDD
These icons are also available in a single file from which you may copy them:
Icons.dmg 41.3 Mb.