The best lab you can do to teach your students how to add multiple vectors by graphical and analytic method. It shows the graphical method of adding vectors in step-by-step method starting from selecting the scale.
The graphical method is followed by the analytic method in great detail. An extensive discussion is available in breaking a vector in to two components perpendicular to each other. Students usually find it difficult to break a vector in its components.
Finally, the result is verified in a weight bench.