Hi Mrs P, wishing you happiness, peace and comfort on your birthday.
Was just about to post when I read Pams' contribution
I never throw away 'old' cards anyway, but the same proceedure started with us some years ago, after my sister put up a valentine card from her boyfriend (then husband) when they were either courting or just married.
Of course, it was all a bit tongue-in cheek to start with, being a light-hearted way around reminding him that he hadn't sent her one in later years.
(The same card went up for years)
For a few years now, I've done the same with valentine, birthdays and special Christmas cards. They serve as a great reminder of when we bought all the slushy, sloppy but true sentiments - which have become blunted over the years - but it does make us realise that we still do mean every word.
I agree with Pam, set one on show which your dad sent you when he was able to give you this himself.
If you don't have one, or even as well as, buy dad a card from you, write a message inside TO HIM, tell him how you feel and how you love him. Take it to him on your visit.
It dosen't matter that he may not understand it properly, you will have marked the day.
Birthdays can be for giving as well as getting. You can still thank him and send him your love on the occasion of bein X years of being your dad.
Again, best wishes on your special day Mrs P
Love, Necion. x