If you're kids are bored with books, you need to spruce things up! www.readkiddoread.com is an awesome site to find new series and books that interest your child.
Read more about the website here: http://www.bmorefunmommy.com/2014/07/read-kiddo-read.html
It's such an important life skill that your kids learn to love reading. Instill it early in life by providing books appropriate for their reading level.