Yes - Give your wife flowers for Fathers Day. If it wasn't for her you wouldn't be a dad anyway. And tell her that if you had it to all over again - that you'd do it all over again. It's an inexpensive way to show your appreciation. For that matter - if your mother is still alive you should send her some flowers on your birthday. You wouldn't be here if it wasn't for her.

At least - that's my opinion. As they say - your milage may vary.