DOS programs and the ready to use image with DOS 6.22 to burn on the USB flash drive.
Unpack the file to-burn-on-flash-disk/dos.img.7z and burn in on the USB flash drive with the program like balenaEtcher. Then enjoy old MS DOS 6.22 environment on your modern computer without any emulators and VMs.
floppy-images and dos-programs contains most of the programs installed into the USB flash drive image.