The mystery parcel I remember that puzzled us all

We had a family tradition that we followed until the children went to their own homes, and still do occasionally. We all write a 'clue' on each present, but the objective is that it should be of almost no help in guessing the contents, but be obvious once the present has been opened.

But as for a particularly baffling present: My sister gave my something electronic in a standard rectangular box, but took the plug out and attached that to the outside of the box, then padded it so there was an odd shaped lump to the parcel. She then instructed me to keep it in the fridge...