There are some pretty good deals on tools at Amazon right now– here are a few great deals I found. Don’t forget Father’s Day is June 21st!
Black and Decker Cordless Handsaw 63% off from $72 to $26- click here for more information.
Skil Cordless Drill 52% off from $111 to $42 here
Milwaukee Screwdriver Kit 77% off from $252 to $54 here 
While these are all cool ideas, I just got my dad the NailJack at Amazon. He's going to love it, it's the only tool of it's kind that is designed to pull nails from wood. Best gift ever.