Many products that I buy at Costco are doubled or even tripled up using these plastic handles. Do you know of a way to recycle these to make something useful?
Make sure you don't use these outside. Birds and other creatures have gotten stuck in them and suffocated.
That being said, you could crochet around them and make either single picture frames or a collage.
Double your closet space! Put the "hook" of one hanger thru one hole and hang as normal. Then use the other side or hole to hang another garment.
Keep your scarves, belts or ties organized !
I feel sure there are people like Sandi (a ThriftyFun contributor) who can come up with all sorts of uses but I am just not that creative and have to leave this type of thinking to others.