Can you unlock the secret of this two-piece puzzle? This is an easy project that you can make with scrap wood in less than a week.
If you can make a cutting board and a CNC sign, then this will be an easy one week project for you. The object of the game is to jump one marble at a time, removing the jumped marble until there is only one marble remaining.
Build a bridge out of only paper and glue that can span 16 inches and support a load.
Build a "tensegrity" structure. There's no project plan here, only a challenge. Google "tensegrity" and develop a plan from what you read.
Teachwoods has a growing list of project ideas that you can access.