Put all packing materials in bag with present and head for lockable room. Once inside lockable room, lock door and start to re-lay out packing materials. Remove cat from box, unlock door, put cat outside door, close door and re-lock. Lay out last sheet of paper. Discover cat has already torn paper.
Unlock door go out and hunt through various cupboards, looking for sheet of last year's paper.
Remember that you haven't got any left because cat helped with wrapping last year. Return to lockable room, lock door, and sit on toilet and try to make torn sheet of paper look presentable. Seal box, wrap with paper and repair by very carefully sealing tear with transparent sticky tape. Tie up with ribbon and decorate with bows to hide worst areas. Sit back and admire your handiwork, congratulate yourself on completing a difficult job.