For my old trailer, I cut a couple of pressure-treated 2x4 scraps. beveled the ends, cut grooves in one, and added 1/2" x 3/4" strips to the other so they'd lock together. Used them for years . . . even after they broke in two. For the new trailer, I picked up a 10-pack of the Trailer Life "Lego"-style leveling blocks. They're real light weight, come with a nice little storage bag, and I figure I can use them under my stabilizing jacks, as well. If you've already got some scrap wood, you might as well use it. But if you're concerned about weight, these are one way you can cut a couple of pounds.
2013 Eagle 266RKS
2011 Ford F-150 w/3.5L Ecoboost & H.D. Tow Package