Many dads (stepdads count too) don't need another tie, gadget, or bottle of booze. Even if they did, such gifts bear the odor of obligation rather than of affection.
Even if your dad's far from perfect, as long as you'd like to express
some appreciation and/or build your relationship, Father's Day is a
natural opportunity. In my PsychologyToday.com article today, I suggest presents that These might help.