suggest giving him a real-life doll. Actually, I really appreciate the original poster's attitude. You can still be friends after breaking up. There is no need to never see each other again.
As a breakup gift, you can give him something commemorative. After all, you have been together for many years and have many good memories. So this real-life doll is a good choice. You can make a real-life doll of him for him, according to his preferences. For example, if he likes football, you can give him a football doll, or something like that. This is also very simple to do. Just find a good store online and send him his photo. Or you can give him your own real-life doll. Giving it to him is more commemorative and can also keep a memory.
Or you can give him a personalized crystal piano, on which you can engrave your two names, and you can choose the music you like.