A bunch of old sketchbook pages. There are more waiting to be scanned, too - well over page 900!
So I accidentally found a better way to scan stuff. Assuming that bloggers preview isn't wigging out on me, the dragon in the second image looks MUCH better compared to the rest! I know exactly what I changed while scanning too so from now on I will be using the same process. Hopefully, the scans will be better quality than they usual.