LittleThings.com : 2. Shrinky Dink Keychains : 11 Adorable DIY Crafts Dad Will Love Receiving On Father’s Day -- To craft one of these creative keychains, all you need is a sheet of Shrinky Dink paper and a box of colored pencils. Just set the oven to 350°F, cover a cookie sheet with tin foil, and pop your plastic creations into the heat for 3 ½ minutes. Don’t forget to punch a keychain hole at the top so Dad can carry your art with him everywhere he goes!