Buy a yellow bucket.
Buy a bunch of yellow items (no theme needed other than color.)
Print a happy sign for your bucket.
Print a happy quote off the internet onto cardstock and place in a frame.
Add additional gifts if you like. I made this from a clear, acrylic frame; added scrapbook paper, ribbon, and initial then hot glued a pack of post-it notes on top.
Or perhaps you want to give your friend some gumballs...
With a secret stash of money stored inside ;)
If you have extra gifts, feel free to wrap them up!
Place everything neatly in the bucket, then spread some sunshine into someone else's life! Would be great for a random act of kindness, too!