Wall decals are a nice way to decorate without making holes in a wall. They usually come as a peel and stick decal, or as a group of peel and stick decals. Some are decorative pieces and others are sayings. These can be added to walls, then removed.
One thing I would caution is to be careful as to what the wall has as an outer layer. One year we used tape to display our Christmas cards on a wood panel wall. It turned out that the tape removed the color from the wall. So, if the wall has a thin color layer, or if it has wallpaper, you might choose a different location for a decal.
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