If your Dad lives in the UK, USA, Canada, or anywhere else that celebrates Father's Day in June, you can treat him to a quality handmade leather item or other accessories from Galen Leather. They have selected items discounted by 25% 'til the 19th, with shipping extra (which is normally quite reasonable). I've bought a couple of things from them and found the quality to be excellent. The only slight issue may be lead time to make some items, but that's clearly identified during the sale process, and shipping time from their factory in Turkey. Personalisation can also be added for US$5 extra (~AU$6.62)
Edit: there's a minimum US$50 spend before the code will work. Thanks to cyssero for finding that.
Some examples are:
Leather Safety Razor Case - Black - US$19, now US$14.25
Leather Travel Wallet-Rustic Brown - US$32, now US$24
Leather Bicycle Saddle Bag - US$49, now US$36.75
Mahogany Wood Desk Organizer/Pen Holder - US$38, now US$28.50
Copper Shaving Brush - Bowl - US$69, now US$51.75
Do they ship to Australia?