Here's a contest for OSDSYS/BIOS/ROM/Menu permissively licensed assets.
Visit here for more details: https://gist.github.com/uyjulian/f84199bec21b94065226eb104ab01b0b
You can post your submissions here.
Visit here for more details: https://gist.github.com/uyjulian/f84199bec21b94065226eb104ab01b0b
You can post your submissions here.