Random key and chords for practice

[PLombard]

I'd like to practice chord extensions and scales with user-selectable randomly sequenced chords. Say 2 per measure, all 12 keys, minor chords. After playing one iteration, press a button and they randomize again. Use the principle to also combine chord types for example, min, maj, dom. Etc. with random ii-V-I progressions, etc.
It would be an electronic version of flashcards but with chord backing.