Students start with the four familiar items. They write clues to reveal what the item might be, trying not to give it away in the first few clues eg if it's an apple it's not good saying i'm a red fruit in the first clue, a better way would be to suggest that you are round, you can eat me etc. before going into more detail in the final few clues.
The second part of the activity has space for students to do four of their own items and again write their own clues. Hope it's useful.