You probably can't order these online by Sunday, but maybe you can print out a picture? Treehugger has a fun list of Father's Day gift ideas including this Magno Wooden Radio that's also compatible with most MP3 players.
Or how about the EcoGir suit made entirely from recycled PET bottles and available at none other than Sears. Unusual for a suit, this baby's also machine washable.
For more ideas, check out the list over at Treehugger.