If he likes DIY, again no budget is too small or too large, be it a couple of tools from your local hardware shop, or a power tool, although to be fair you know you'll worry when you give him the hammer drill that he's going to do something to himself or the house. Just wait for the frantic call asking if you know a plumber as he's gone right through the water pipe.
If your father is the more active type, adventure days are a good option, but these don't come cheap. From a go on a racing track in a Formula 1 car to a parachute jump, pretty much everything is available. Experience days are something different, and can be a more leisurely alternative, also something he can take your mum on, be it lunch on a steam train or a vineyard tour.
If he has a sense of humour, the internet does have the answer. There are plenty of web sites offering funny presents which would be perfect for father's day. Some may be gadget type gift ideas, some may just be tongue in cheek humour. Once you move away from the traditional gifts into something a little fun, a little quirky, even though the gift doesn't necessarily have his name on it, you're now into the true personalised gift. With something tongue in cheek, a little fun, it's personal because you'll match the gift to your dad. If he hates work, you can buy packs on how to get revenge at work. If he's sarcastic, you can get desktop signs which pretty much warn others he's not feeling too approachable at the moment.
You should be showing your Father love every day of the year, but on Father's day, rather than opt for something safe, have a look for something a little odd. It doesn't have to be whacky, but if you find the right web site, with enough choice, you'll find something tongue in cheek fun, sarcastic or just down right ridiculous that'll make the perfect father's day gift for your father in a million.
Graham works on Laughing Donkey's website, constantly on the look out for items he thinks will be lifestyle enhancing or just something that will brighten a persons day. There are plenty of gifts available that would be perfect for fathers day, and if you know what your Dad's sense of humour is all about, you'll find something that's an ideal match.