Let's talk about Poltergeists and something rather similar.
So, poltergeists are manifestations of negative emotions, typically caused by intense trauma, fear, anger, etc. Most of the time these are formed by people with psychic or psychokinetic abilities that may or may not realize as much (usually the latter). These manifestations feed off of negative energy and can become their own entity with time. Which means that after the creator of the manifestation dies, leaves an area, breaks ties with it, etc it can latch onto other people or places. They're also not easy to get rid of but they're an Unconscious creation.
Now, what if we took this concept and flipped it? What if you took a positive, protective energy and Consciously shaped it into a manifestation or entity? Well, that's an interesting thought, hmm?
One of the principles taught in spiritual work, hedge witchcraft, and even mediumship is that what you visualize has a presence on the Astral plane. This is even a principle of quantum physics, in which every decision or thought creates an alternate universe in which that becomes true.
How is a manifestation actively created and to what end?
A manifestation can be created by visualization and meditation. Engaging in a trance-like state and visualizing the form, purpose, etc of your manifestation. Of course you still need to take great care to not be fooled by any other spirits or entities in your vicinity. So having personal protection is very important, and I do recommend cleansing yourself and your space before proceeding. The purpose of this manifestation is to act like a guard dog protecting hearth and home from negative or malicious forces. A great visualization in fact Is a dog for this reason.
So you want to treat it like any pet you'd have. Say hello to it when you come home, say goodbye when you leave and feed it the purposeful, positive intention. A lot of people that do this also create a totem or talisman to channel this manifestation into a space. If you want you can even carry the talisman with you. Bring it in your car on a long road trip. Carry the extra level of protection on the road.