Yesterday I made a shaker pocket card filled with red and blue sequins. It was super easy to make and It turned out quite cute! Just cut out one of the pockets from a plastic pocket page (the ones with nine pockets), fill it with sequins and use some sticky tape to close it. I used a stapler to attach it to the card stock and then I decorated it with a cute sticker and some other stuff.
Here's the back of it, I just glued the same blue and white striped paper to the back and added a few hearts. This card might look even better with white card stock, but this was the color I had at hand.
I think cards with shaker pockets are much more fun than normal cards. After I made this card I've gotten every now and then the craving to pick it up and give it a good shake. The sound of the sequins is so satisfying somehow, haha (no, I'm not crazy I promise!).
If you're from Finland and don't know where to find the plastic pocket pages, I've seen them at least at Suomalainen Kirjakauppa, Akademiska bokhandeln and in board game stores like Fantasia pelit. I think they're about 4 euros for 10 pocket pages. If all else fails you can buy them online from Fantasia pelit's site.