Engraving has a pretty clear message. If you get something engraved, then you really care about the person for whom you had it engraved. Engraved gifts are quite popular because of this. They are a good way to give someone a message that they are truly special.
The options for engraved gifts are quite vast too. There are options to give them something fairly practical, such as a glass or mug. There are also ways to get them a plate or a plaque if you want to get them something a bit more special. You could just get about anything engraved if you really want to do so. This could be a model or a nice ornament even. It just has to be something strong enough to survive the process.
There are a few better options for something that’s a bit more classy. There are places where you can order an engraved crystal award, then have it given out as a pretty reminder of how much someone’s efforts are appreciated. This would obviously be for something a bit more important than a standard birthday, but it’s a nice idea for the big events and for people who’s work has really helped you. It’s at least something that you should consider.