Another possible outlet for sales is the model aircraft industry. Carbon fiber is often used as reinforcement in some areas of the wings. I haven't been actively involved in that hobby for a long, long time, but I do still look into it every now and then.

I will say that having a supply of CF scraps available might make me want to experiment with it on various projects. I would suggest setting up something like an EBAY store to list what's available. Same deal as the various suppliers of aluminum drops. I buy nearly all of the 6061 aluminum I machine from that type of vendor.