I would dedicate them to whatever or whoever it is you hope to guide you and then ask that who you choose blesses them. So that would all depend on what or who that is. Usually deities over wisdom are also associated with divination.
If you already know your spirit guide, then you may want to ask them. This is a very personal choice.
A spirit teacher of mine blessed mine for me. Only once in a while, I pass them around a fire in order to cleanse it. Fire is a force of nature my spirit teacher is akin to, so it doesn't disrupt his blessing.