Your old man sounds like a top bloke. Why not go for an experience this time? Maybe tickets to a local footy match or a brewery tour? My dad's eyes lit up like a Christmas tree when I surprised him with a fishing charter last year.
If you're after something tangible, how about a custom photo album filled with snaps of your best moments together? Throw in some cheeky captions and inside jokes for extra laughs.
Oh, and while I was hunting for pressies online, I stumbled upon this site called DadShop link . They've got a Father's Day section with some quirky options. Might be worth a gander.