Eventually

Making a dice tray (something for board games so that dice don't shoot off the table or knock pieces when rolling them enthusiastically).

This started off as a £3 jewellry box from a charity shop, de-hinged and trimmed down to take out the hinge recess, and being lined with leather from my school satchel - which is something Dad took apart for leather stock and didn't get around to using.. probably 30-40 years ago.