Check out these great Frozen activity packs made by Royalbaloo.com. These are great because you can just download it and print it from home. Easy easy. They actually have a lot of different themes but Frozen is their new one. These are great for road trips or during the summer vacation to keep them off the TV or video games.
The Frozen activity packs: The Tot Pack, PreK Pack, K-2nd Pack , 3rd Grade Pack.
Here is the link: Frozen Pack Printables
Check out the rest of their site. They have a lot of printable stuff and great educational things too.