I have two dream catchers and my wife has one that I bought her when at the Florida Folk Festival for work a couple weeks ago. We use them for decoration.
A couple years ago i sent one to my middle daughter who was having bad dreams. She hung it up and those bad dreams have gone away and have not returned. I believe it was psychological for my daughter because I told her that if she hung it up it would catch the bad dreams. I wasn't a Christian at that point. Since my children don't live with me and my ex-girlfriend is an atheist I don't talk about Christianity to them.
I am half native American so for me it's a part of my culture. Both of mine have what's called a war shield in the middle of them. The one has wolves up on a mountain with a wolf pup howling and the other one has a wolf lying down along a river bank looking into the water with the face of an Indian look back at it.
My favorite animal is the wolf as you can probably tell.
My wife's is a regular dream catcher. All three of them are just hanging on the walls of our apartment.
I have mixed feelings on worrying about objects. Generally, I think that Christians fuss over anathemas too much; and that the fussing can create new problems. Assigning power suddenly gives it power through fear.
But I have to admit that I've had a couple incidents where "something" seemed to come along with an object, and I ended up rebuking nasties and throwing it out.
I have also found some freedom in removing things from sight that bring on negative emotions... photos of family members that were controlling, gifts people gave me that were associated with anger or frustration... these things make bad memories resurface. There is a benefit to putting good, freeing things in our line of vision. Think only on what is good and righteous.
The dreamcatcher is a craft, part of heritage, made with fondness and care. The legend that goes along with it gives temporary relief, but might turn into a larger doctrine later. It seems to go along the same lines as tooth fairies and Easter bunnies -- things invented to cheer children, that they end up believing in.
What is hateful to you, don't do unto your neighbor. The rest is commentary. Now, go and study.
People assign power to objects; you don't need to.
"...be on guard against giving interpretations of Scripture that are far fetched or opposed to science, and so exposing the Word of God to the ridicule of unbelievers." --Saint Augustine
Dream Catchers are from a pagan religion. Would you hang a pentagram, goats head, or inverted cross in your house? If it is just a matter of someone else assigning power, why not? Because it is an afront to a Holy God! He is jealous for us, and will not share His glory. These things are occultic and you are possibly opening doors you don't want opened by having them.
If you didn't know the origins of these things, you have not sinned, but now you do. Repent and take them down and throw them away....please.