Lizzie buries everything! In my garden, which is NOT big, there are the following:
1 lovely butchers bone,1 dental bone,four socks,an old mitten found on our walks,two pieces of towel, and umpteen cardboard tubes, plus two pairs of my undies which she nicked out of the washing machine. She also,like the others say on the forum, "buries" things under cushions and looks quite put out if you find them. What fun they are!!