seems fun, let's see what I can come up with.
n00bs current list of what he'll do for each week, and the tile when submitted.
Week 1- Small tileset enemy-ish thing(also useful as a signpost... or a thermos)
Submitted!(Obvious warning: Please change white to the uppermost leftmost tile's color)

Week 2-Layer 5 Background(day) (Thought this would work better as one)

Week 3- Random Eyecandy tile(Or a hook)-Curse you vacation! This Entry is too late, and unless rollover is enabled will not appear-
Week 4-A vine.(Edited to continue Violet's Viney peice)-Summer camp == Not ever seeing this tile unless rollover is enabled-

Don't let my plans limit anyone else, if you want to make a vine tile, go ahead.