I guess one can always stick with the classics. This silk tie from Zegna looks quite nice.
And of course, there is the belt, like this one from Gucci. One can't possibly go wrong with such generic things. (Well, unless you picked out a truly ugly tie).
More practically however, one can get their dad's a leather wallet. My dad uses a Vuitton one similar to this.
Another coveted men's item (I'm told) is leather shoes, especially Tod's and Ferragamo ones. However, my family is pretty conventional with superstitions and giving people shoes and clocks as a present is a big no no-even if they are Tod's/Ferragamo's.
And of course, they do so love the electronics. This set here is a Bose entertainment system. Personally I don't know much about it, so wouldn't know where to begin buying electronics for dad. If this is your inclination, I suggest you ask first.
Another generic gift for men is cologne. I'm not even sure what they are for (is it something they use after shaving?), but I've heard fabulous feedback on Chanel's Allure for men from friends. Although I'm not sure if that apply to dad's. . . .
Men have to take care of their skin too. Last Christmas, I got my dad moisturizer and he actually uses it! Of course, it wasn't exactly from La Mer (although I've heard it works really well on men too), since thats waaaaay out of my price range. But I'm sure my dad wouldn't have wanted such an expensive gift anyway, since ultimately he's paying for it!
Another thing I've bought my dad thats within budget and he loves was a book light, since I know he likes to read. It really is the thought that counts.
This time for Father's Day, I got my dad a classic fit Ralph Lauren Polo. One can never have enough polo's right?
Happy Father's Day!