We don't want zombies on our lawn!
Being an apartment dweller myself, I can appreciate the frustration of not having a lawn to keep zombies off of. Thankfully, thanks to gumdrop technology and some incredibly tiny terra cotta pots, we can now keep zombies off our desks, cubicles, dashboards, shadowboxes, and all kinds of other lawn-free areas currently unprotected by courageous gardens.
Super Sculpy clay and acrylic paints, with satin-finish varnish. (Terra cotta pot has matte varnish on it, to protect it without making it uncharacteristically shiny.)
Plants vs. Zombies © PopCap Games (I think)