You could have a big jar like above with fun-size candy bars inside, each wrapped with some "sweet thoughts"--loving sentiments. I think I would give this to my husband as a gift for when he needed a little "pick me up".
Your love could keep it in a deep desk drawer at work....or perhaps in their locker at school...or in a bedside table. Whichever they prefer.
...and when it gets low, be sure to give them free refills (of candy AND of new, sweet thoughts).