The Webelos den from Pack 11 needed a wood project recently for their Craftsman Badge (actually a pin) and I had a few projects left over from a different Webelos event many years ago.
This was a treasure chest of sorts and it included fastening the sides together with screws and fashioning a lid out of a board, some nails and some fabric straps.
It's a neat project and they seemed to have fun with it. One of the challenging issues is that The Guide To Safe Scouting indicates that Cub Scouts aren't permitted to use power tools.
This is easily resolved by using old-time brace and bit technology. Chuck up a modern Phillips #2 driver bit in your antique brace and you've got a very powerful screw driver with lots of torque.