The moment you consider something simple, like a rock, it stops working. Why is this? Because ID 'theory' is an argument from incredulity, and a rock offers nothing to be incredulous about.
I.D.ers are keen on information as evidence of intelligent design, and the Young Earth variety are frequently incredulous about the information that rocks can impart to us. Your little rock may well be able to answer the question "how old are you?" It might also be able to tell us about conditions on earth when it formed, and will surely be able to answer about the general process that formed it.
If it proves to have high information content, is that evidence of design?