Here's an idea for you to hang them on a wall! https://www.sincerelysarad.com/wp-content/uploads/2016/03/DIY-Vintage-Organizer.jpg
If your garage is unfinished, add a small board horizontally between studs near your kitchen door to stand brooms and mops in the space. Or, if the handles of your broom and mop have holes, just tap a nail into the studs or pantry.
Hi ! I have a strip that attaches to the wall with slidable clips that hold mop or broom handles. I have one with 4 clips and it holds my broom , mop , swifter mop , & duster .
I hang mine on the inside of a closet door