http://www.immediate-entourage.com/
they're all free to use and easy to download!
Once they're in your visual, use photoshop layer effects to change the appearance - rather than editing them permanantly. That way you can revert / change the style as the image progresses.
The photoshop file with the layer effects is on our Wetransfer file sharing site here: Older-Couple-Reading.psd
As usual, share your own suggestions for styles!