I have spent many hours playing Plants vs. Zombies so I have to suppress the urge to obtain lots of these little pearler peashooters to set up rows of them in my living room. Etsy user 8bitclassics (also littlemissysg on DeviantArt) made this little guy from their own fan art design pattern based on the Pop Cap game, and they have the Sunflower you are sure to need as well. Check out their shop for all sorts of pearler goodness, etched glasses, and some especially cute felted figures.
I think I can hold off only until spring. Then the snow will be gone and my garden gnome will be ready for his new army to defend against any zombie invasion!