Baby equipment like change tables isn't much use when your kids get older. Passing it on to another family is always an option, but for a more elaborate solution, you can convert it into a light box.
At IKEA Hacker, Boris outlines how he converted the $69 Sniglar change table into a lightbox for his wife's sewing hobby. It's a slightly fiddly hack, but the end result is impressive, and you could get the same effect from any similar table. For another portable option, check out the suitcase light box.
Baby changing table grows into light table [IKEA Hacker]