Playing with making icons. WIP

hey friends..

this is just a little "work in progress"
I've never really 'made' icons before,
and never really planned on it..
But I recently saw these 2 little icons on the "Take the Ubuntu Tour" site, seen here> [link]
and I thought they looked nice, and that I would like to have some icons like that. So I've attempted to 'make' some.. lol

I've not really been precise or orderly in 'making' them..
as i just wanted to see how a few would look, So this is what Ive got soo far.
Some I want to remake, but I wanted to see what others thought about them?
You like them? or you think they are lame? lol

If people like them and would use them, I'll do a better job on them and make some more, to the best of my ability, anyway.
I guess they're only good for folder/dock icons, though.
Interested to hear your thoughts, -
comments/ constructive criticisms welcome. lol