Lots of free printables from Tortagialla here.
The Lovely Paper Blog has free download to make the cupcake linersshown at right.
I love these feathers shown at left. They are a free download from Little Sightings.
Cart Before the Horse drew up a bunch of mix tapes that you can download and use as well. They would make great gift tags!
If you're still looking for Father's Day ideas, take a look here at PhotoJewelryMaking.com's ideas you can make.