Getting any for free will probably be pretty tough. I got some great samples of handle materials from Kit Carson, including several types of G-10, two types of rosewood, some ivory Micarta, some camo G-10, some black paper Micarta in 3x thickness, some black linen Micarta, black canvas Micarta, rag Micarta, and a few other things, including some carbon fiber! Now, not all of it was usable for a complete knife, although about 80% would've sufficed for a regular sized blade, and probably the rest could've been used on a small folder. In any case, Kit was very generous, but the point is that I traded some stuff to him, and we both probably made out pretty well. You may want to contact some plastics distributors or something in your area and see if you can get samples that way, although i suspect you'll have to find someone to trade with, or more likely, you may have to simply buy it.