Here's a fun trick: Create a journaling card and then turn it into a bookmark by folding it in half and adding a couple magnets to it. This one was created with steel dies and clear stamps from TechniqueTuesday.com. For the how-to, click on the picture.
Another fun idea for a 4th of July party! Dress up the napkins. Wrap cardstock around them and add some twine and stars (die-cut with the Nested Stars steel dies and stamped with the My hero stamp set from TechniqueTuesday.com). So fun!