There is no biblical support to the idea that demons can attach themselves to any non-living objects. This belief is actually part of superstitious practices and occult beliefs found in animistic cultures and among those who practice the occult. :)
I asked for a definition because "demonic entities" is a sloppy slang term which may or may not have a specific meaning. If you think it means a spiritual being, the question is silly because spirit is defined as everything that can not be measured. (As opposed to science which is everything that can be measured.) So there is no danger from demonic spirits because they only work through people, animals, and diseases, as explained in the book of Job. And if you mean something else, then you must explain what you are talking about.
Actually, if you mean something else then you are talking about fiction and it can be anything your story telling skills can support.
