One of the fun things I've pulled out of my scrapbooking tool stash recently is my Fiskars crimper. I haven't used it in years but have been having a fun time making patterned paper look like corrugated cardboard- which is so hot right now!
The crimper adds fun texture and dimension to any project. It is great to distress the ridges or leave as it. I used it on my card set as well!
Pull out your old crimper and give it a try!