One way would to put each item as it's own animation in the same sprite.
then when you startup the level you can change the sprites animation at random.
Set the animation to:
TokenAt("AnimationName1,AnimationName2,AnimationName3"),random(3),",")
this grabs one of the 3 names at random, using the comma as a separator.
Then on collision with the object you can check to see what animation was playing.