Chris and Jane's Place sell the gruesome creatures, and they are just what you need to freak out the neighbors and to counter their ceramic geese in costumes. The disgusting yet charming little gnomes are made from cement and take about 2-3 weeks to become infected and arrive at your door. As you can see, the shop offers a variety of styles. The one where tiny gnomes devour the pink flamingo lawn ornament is my favorite.
If full sized lawn decorations aren't your style, you can always opt for a zombie gnome keychain too. It will keep your keys safe because no one will want to put their fingers near it.