If you would like veer from standard shapes, try this arched mirror from Glass Warehouse. Sometimes generally known as a Norman window, this design has a semi-circle on leading plus a squared-off bottom. It is available in three sizes with slightly diverse proportions. Though it might be way too large https://flenzy.store/elegant-round-metal-decorative-wall-mirror-17-beveled-glass-mirror-for-stylish-home-decor/