In this STEAM activity, students create a leprechaun trap to try and gain 3 wishes. They will need to explore aspects of leprechaun lore, and move through the design process, from brainstorming, to a diagram, and finally a model, honing their idea at every step.
The complexity of the final design task is completely at your description and it can be opened up to be done at home, or over the course of an afternoon in the classroom. On thing you can do to push your more creative students is to limit the materials on hand, or to give them some strange materials that they need to incorporate (for example, a pipe cleaner or milk bottle cap).