There are so many creative and easy things to do to add a little fun to your kids room.  Below are just a few ideas I have come across to get you started. 

Of course most of the items can be purchased, but why not make it a DIY project!

Chalkboard tables are a fun way to add a reusable art space.  If you have an existing children's table all you need to do is go to your local home improvement store and purchase a spray can or two of chalkboard paint. 

If you are lucky enough to have a table with four legs, cut the center out the same diameter of a cool whip container, place it in the hole for a great place to store the chalk.

Vinyl stencils are a great way to personalize a space.  One site I love is http://www.thesimplestencil.com/ .  They have a huge selection of fantastic ideas, you can select the size, color and most are removable.