Mmm.. or perhaps just rely upon the existing rear metal tabs to act as the hinge. (some initial adjustment may be required).

Then it could be as simple as replacing the two front tabs with a catch of some sort, possibly magnets.

Or bend/cut away the two front tabs of the lid, and install tiny, flush-mounted screws into the secondary tabs, one on each side of the lid, just behind the handle catches. Or magnets in that same place.

Yeah, I like that second idea.

"Flat head" screws (the kind with inverted cone shaped heads) can be let into the metalwork pretty much anywhere for a flush / smooth exterior finish.

Cheers