New life for IKEA furniture from SUPERFRONT. To Australia they only ship handles and legs. Otherwise they provide possibilities for upgrading your Ikea furniture with cabinet fronts for a custom "Ikea hack" look.
With its adjustable shelves, the IKEA Mandal headboard is already fairly adaptable, but have you thought of using it in ways other than a headboard? These folks did; perhaps it will inspire you to look at the Mandal with new eyes of possibility.