1. Space-efficient vegetable growing device: functionality considerations, moisture-resistant treatment for materials, conceptual sketches, evaluation and selection, final design with dimensions, material selection, and manufacturing process.

2. Shop display for promoting vegetable consumption: functional requirements, temporary jointing methods, three conceptual ideas, comparative evaluation, detailed solution with dimensions, material justification, and fabrication method.

3. Assistive vegetable peeler: key functional aspects, vegetable skin removal techniques, development of three design concepts, critical evaluation and selection, fully detailed solution with dimensions, material recommendations, and manufacturing process outline.