I'm going to be honest with you. You're not going to want to hear this. And you certainly won't agree, but I'm damn sure right about it. Are you ready?
Don't do this.
Convey all 100 things to her with non-verbals and action over time and every day. Compliments are ok sparingly and non gushing.
But if you literally write down 100 things you appreciate about your wife and give them to her, her conscious mind will like it, she'll even tear up probably, and hug and kiss you, but subconsciously you'll have reduced yourself to her. You'll have damaged the necessity for you to remain a challenge and a mystery to her. And that is the basic foundation of what makes you attractive to her.
Your strength, tenderness, wisdom, leadership, confidence, humor, personality, even your love for God, all build your attractiveness upon this singular foundation:
Challenge & Mystery.
And now you know.
It's the perennial truth of why women - even decades long married women - are attracted to their man. Period.