Noel-Ann found this one in Texas. The object is to get the two marbles into the holes simultaneously, like this:
A Secret BoxThe other puzzles were brought back from a market in the Dordogne. This, amazingly, is a secret box which can be opened by performing a series of operations.
A packing problemThis one starts off as a rather nice box with a red slab on top.
When one slides the lid open one finds that it is packed full with more wooden blocks. How can one add the red block and close the lid?