Let the kids give a hand - kids wall art
If you want to involve your children in decorating their rooms but they do not seem to excited about it, you may want to consider allowing them to make some of the pieces that go into their room. My daughters for example made their own comforters from some of the cloths that they had outgrown. I’m not saying that it was perfect, but they were both proud of their work. And for the kids wall art they took tin foil and crayons and made some kind of freaky Mosaic all over their walls (completely removable), and then mad their own blinds for their windows out of heavy duty paper. What’s nice is, they can change most of the stuff whenever they want too, because they made it themselves!