I love this idea. Give him a slew of envelopes, each one with a specific condition. Examples are: Open when you are feeling sick. Open when you need motivation. Open when work is aggravating you. Open when you need to remember how much I love you.
Birthday presents on the hour. They dont have to be huge presents--just something for them to open! It would be a great idea for a big birthday---like their or - Or anniversary presents as the picture suggests?