Use toothpicks to create shapes by connecting together.
How tall can you build a marshmallow structure that will support weight?
What to do
Using only 20 toothpicks and 10 marshmallows, build a free-standing (standing alone without being attached to or supported by something else) structure that is as tall and as big as possible, that can also support an object.
Try to have your structure support one object. If it can support this object, try adding another object. How many objects can your structure support?