Today I had that same problem. I had used all the layouts we created from the kit and I didn't know what to do with some of the bits and bobs of papers, stickers, and embellies. So I decided to make some cards. I got out a bit more cardstock from my stash and ended up creating 5 cards with all the leftovers. One card we immediately signed and stuck in an envelope for my son's basketball coach. We will see him today and we wanted to get that to him. It is a thank you card. The rest are regular note cards or thank you cards. I will save these and use them in the fall most likely.
After I completed all these cards I was left with really little bits of patterned paper which I didn't feel so guilty throwing away. I kept the extra stickers and alphas for later and the extra embellies I kept as well. I inked all the edges with brown and some of the insides also had a few extra bits of paper or a coordinating sticker.