Since 25 isn't here right now, I'll provide the answer she generally gives...

You may not need to do anything special, if you aren't there at the moment...

but a simple card, with the words "still worth remembering" might be something you could do...

~~~~~~~~~~~~~~~~~~~

Now in my case, I am unlikely to make mention of it to my W, at all. I will... take my own time for me to... remember it... because it is for ME...

Make sense?