I designed this for this challenge. It is my first upload, however I am not new to 3d printing. Though I enjoy browsing ThingiVerse, I never really downloaded much, nor did I ever consider contributing. This hopes to change that.

The Rocket has numbers etched into it. When the countdown approaches the star, the top pops off and reveals the candies. It also stand up without support so it can be used as a desk ornament or a storage box.

Ideally this mechanism would be smooth as silk. If not, consider inspecting the notches and sliding surfaces for imperfections and sand them. Lubrication reduces wear and prevents the gripping of sliding forces. You can also scale this up if you like.