It’s helpful to have a low mirror, as well as a small trash can where they can place the dirty diaper.
When your baby can stand, you can try standup diapering! This is simply a way of more intentionally involving baby in care of self. You can define a space, preferably in the bathroom as part of their association with toilet learning, where you consistently bring them to change. Baby can stand against a wall or hold onto a small pull-up bar, and they can help un-dress, clean and re-dress. It’s helpful to have a low mirror, as well as a small trash can where they can place the dirty diaper.