Here's a set of cards and bookmarks I made as a gift for my mom. I wish I had made a duplicate set for myself! Very fun and easy to make and she absolutely loved them!
An easy way to set the tone for a group of cards that are different, yet similar is to pick a similar foundation of colors. For instance, I used all blue or blue-like papers as the background.
Glass Glitter (love this stuff)
Old Book Pages
Various scrapbook papers
Glue: Golden Gel Medium
Just tear your papers, collage and glue other items down and you'll have a beautiful set of cards in no time!