Staff drill for harp players

How about a staff drill for harp players? I'm a beginner harper, teaching myself. I really like the staff drill with the note buttons. It would be nice to be able to play the notes on a set of harp strings. They ascend from left to right, and the C stings are red, and the F strings are blue. The ranges vary between harps, but I'd suggest 2 octaves below middle C to 2 octaves above middle C. My lap harp only has 3 octaves. Teacher comments?

Randy

This drill would be fairly simple to build -- some feedback from a harp teacher would be helpful (though I can also research this more to get an idea for what would be most helpful for the average harpist).

Thanks for the suggestion!

a harp drill would be quite useful. i agree