Engineers must keep other limitations in mind as well when designing space equipment. Power, water and space are limited in spacecraft - and there's no place to throw away the garbage. Cordless tools such as drills, dust-busters and saws come with their own battery power. Strong, lightweight metals, such as the wires used in dental braces, help cut down on payload cost. Travel wipes cut down on water use.
Efficient packaging keeps waste to a minimum.
This activity is a good chance for students to use their imaginations. You don't have to worry about procuring supplies or cleaning up - students can make wild designs as long as they meet the basic criteria of not relying on gravity to hold down or deliver the candy. However, if you would like to give students the opportunity to actually build their designs, then encourage them to stick to readily available materials. Prep Download and print the activity. If students get stuck, discuss the materials on the list we gave and gather suggestions for how they could use each one.