Any present is great especially it is coming from the heart. Best if it represents both of you and share good memories together. Different people have wants different gifts, but the trick is to find what the other person wants. If you cannot at least find something that represents you both or that represents great memories together.

If budget is the challenge, may just get a normal one. Casio is a good choice. Look at the designs and see what do you think he might like. There are so many out there. Does he like classic or digital and so forth. Look at what kind of work he does also helps.