Absolutely! As the glaze hardens, it'll hold any toppings in place, so it's best to decorate right after glazing. There are tons of options, too. Keep it simple with sprinkles, chopped nuts, citrus zest, or shredded coconut, or get a little more creative. Try crushing cookies, freeze-dried fruits, and other sweet snacks for a fun topping. You can also add dried, edible flowers like rose petals or lavender for a floral note. If you want to add a fun topping, consider adding an extract to support that flavor in the glaze. For example, you can add a little lemon juice or extract to the glaze and top with lemon zest. Sweet donuts are also wonderful with a sprinkle of flaky sea salt.