I don't know what dragon bones & dragon scales or for, but I refuse to leave them behind.
I won't spoil that...you'll figure it out, but yeah, you should probably keep them.
I purchased my house in Whiterun, I don't really care who lives in that spare room or who "owns" that bed, but I get frustrated when I see that room, I bought that house for me, not for someone else. In fact, I think I'm going to fill that room up with complete junk just to make them mad.
I assume it's for the Housecarl, but mine is always sitting in my bedroom even the few times I've slept. o.O
I want to use a shovel and dig in skyrim

I have one and keep waiting to need it...I've got too much Fable II and III on the brain I guess. XD
Edit: Habit: I say, "I'm sorry, Brother." aloud every time I kill a dragon. XD