When you are designing/decorating a kids' room, there are a lot of things you can do to keep it fun for them. However, to avoid redoing the room every three years or so, here are a few tips to make the room's decor last longer.
Age Attitude - When you are decorating a room for one of your kids, you have to consider the age of the child of course. You want it to be a place they WANT to be! However, it needs to be a place that can easily change every few years. Painting an entire room every time they hit a different phase of growing just isn't practical. However, an accent wall may be doable. Furniture needs to be easily changed as well, or be pieces that can be converted and used differently as they get older. Find things that serve too purposes (or more) so that you avoid it being cluttered. I mean, a kid's room WILL get cluttered, but, if the furniture doesn't make it feel that way from the start, it will make the room feel better in general. Think ahead a few years and think "will they hate this room when they are 13?" if the answer is yes, then make it a little more neutral in design.
Control the Color - So now that painting their whole room pink, purple or blue with a racing stripe seems like too much, how do you keep it interesting and colorful for them? You can add pieces of art, linens, bedding and other things FULL of color and things they love to customize to their tastes. A lot of these things can be changed as they get older without redoing the whole room! If they love bright colors when they are 8 but want muted ones when they are 12, then changing out some bright pictures or bedding will make that happen with less expense as well.
Toughen the Texture - If you want a room to last for kids, you have to add items built to last. Paint needs to be durable and easy to wash off, flooring needs to stand the test of time and their main pieces of furniture need to be lasting. If these things are all done properly, they can last until they move out! Then, when THAT DAY finally arrives, you can redo everything however you want it!