As the previous user suggested, use any animated background, it will add extra sweetness to your proyect and will save time and money. You can even invoice your client, while you can use later for other projects.
If you have a good budget go to artbeats or gettyimages, also digital juice ( 499.99 to 699.99) per volume.
If you have a tight budget or you want to make some extra cash, check ebay, theres a lot of cheap stock footage. Check this ebay store, their footage is pretty good and low prices ( a volume, 30 clips for 59 bucks)
http://stores.ebay.com/Motiondrops
Good luck with your project. 🙂
