The Fishbowl
Idea suggested by Amalia Hoyos.
Yes, possibly all of you have seen at some point in your lives a glass jar filled with different types of chalk or colored pebbles arranged in different layers, forming the most eye-catching designs. The idea is beautiful, but can it be improved? Of course.
Depending on your budget, get a round fishbowl, the typical ones you can buy at a pet store. The idea is to fill it with brightly colored candies like M&M's, Smarties, gummies (if you're not into chocolate)... Of course, the idea is to fill it with layers of the same color, so you'll need to be patient and separate the candies by color.
But it doesn't stop there. To give it an extra touch of quality, you can hide a small gift or a little note between two layers of different colors, so it's not just the recipient's stomach that benefits from the detail we're proposing.
Finally, it's advisable to seal the fishbowl so the candies can't escape. To do this, prepare a lid with some nice paper and secure it well with adhesive tape. If you also write a nice dedication or make a pretty drawing on the lid, your surprise will be top-notch :)