#656 - Bombs and Bows

In Link's Awakening, if you equip the bow and bombs and press both buttons at the same time, you will shoot a Bomb Arrow. Combining items was going to be a feature in A Link to the Past, but it wasn't used until it was partly added in Link's Awakening.

SOURCE: https://nintendoeverything.com/nintendo-on-zelda-link-to-the-past-scrapped-idea-working-with-snes-master-sword-importance-more/