Here's a drawing project that could be great for relaxation and expression, especially for teens!
Wayne Thiebaud Candy Compositions Concepts: Composition, Acrylic Painting, Color Theory - created via http://pinthemall.net
Llama Drawing Project // www.smallhandsbigart.com
Roll a Dice Landscape Drawing Game for Kids
Easy drawing project for kids or for you if you want to make your own easy coloring page. This is fun stuff.
Bryony Houldsworth: Year 1- Experimental Drawing Project
A Bug's Life... Great and fun simple drawing project! Sub lesson idea.
1/2 & 1/2 Art @ Massac. Magazine clipping, and then drawing the other half. Great drawing project. Focus on detail, shading and shape.
Great project for practicing values. Complete lesson plan
Monster Project (3D Modeling) by Jeff Harvey, via Behance