This week's project is a very useful one for kids and adults alike, especially at this time of year. The only material needed is computer paper. When I taught, I used this plan with my 8 year olds.
The photo shows boxes made from full, half and quarter sheets of regular white printer paper. If you want to make the largest box though, I would suggest using tag or card stock as it's not very sturdy otherwise.
Click on the directions photo below for a larger view. If you're still confused, click here for a video.