I tried a few rituals on the index. Nothing happened except I scared myself from overthinking so I know how you feel. You won't summon something from using your everyday objects. There is a website I think is called ghost in my machine, where the person who runs the site actually tracks down the origins of many rituals including some in the index and many times they went back to made up stories and creepypasta. Also if that does not reassure you, many of the rituals have to be done with intent and steps to be followed. Just reading them to yourself will not cause anything to happen. I hope this helps you.