Start by giving them 25 gifts it doesn’t matter whether they are materialistic or full of emotion. Bake one of your mom and dad favourite dish. Create a home restaurant kind of vibe and pamper them with hugs and doing household chores. You can make a video of their 25 years of journey, that you can watch with popcorn and a handkerchief. Wish them from my side too. I wish it goes exactly as you have planned it.