Thanks for this feedback.
D8's are non very common, and I would not want sourcing any to prevent people from trying this game.
There are dice rollers online that one can use in a browser. If google is how you search, then there is an interactive dice roller that comes up at the top of the search results, when you search for 'd8,' '1d8' or 'dice roller'. Admittedly, this is less immersive.