Amazon Fire Pen Holder

So I not-so-recently bought an Amazon Fire 10 along with the amazon case and stylus/pen. I like the sleek design of the amazon case but it has no storage for the pen what so ever. So I decided to make one, and after many, many revisions I finally settled on one that works. It still allows to case to be propped up for watching movies/youtube, or drawing which is one of the main requirements I needed for it. It uses 2 10mmx4mmx2mm magnets to secure the pen, however it you want to forgo the magnets you can heat the sides and press them inwards slightly to get a solid friction fit as well. Or do both. The case it's designed for is this one → https://www.amazon.com/dp/B0BSN4K54V?th=1 The pen it's designed for is this one → https://www.amazon.com/dp/B0BQ89FPSR But it may be able to fit others, I haven't tried and your milage may vary. If you note in the renderings one side is longer than the other, this side should be orientated to the back of the case. I also recommend using some 240 grit s