If anyone is interested there is a C-Max Hybrid owner who has designed a little plastic lip to prevent items falling off the glovebox shelf.
Picture of what he made for the C-Max
Additional picture along with how to pay. He's asking for payment of $9.90 via PayPal to cover his shipping costs and the material costs
Link to his offer to make them for the FFH
Our dimensions are different than the C-Max glovebox but now that he has checked out the FFH dimensions he can make some for FFH owners too. If ppl are interested they can comment below and then I'll let him know how much interest there is here.