You can get a digispark attiny85 cheap off aliexpress in bulk, but they don't have much storage. They also don't look much like a usb, but that depends on your use.
https://blog.spacehuhn.com/badusb-digispark
https://a.aliexpress.com/_mrcmY3Q
You can get a digispark attiny85 cheap off aliexpress in bulk, but they don't have much storage. They also don't look much like a usb, but that depends on your use.
https://blog.spacehuhn.com/badusb-digispark
https://a.aliexpress.com/_mrcmY3Q